Micro lifting device

Abstract

The embodiment of the utility model provides a micro lifting device which comprises a lifting frame body, a lifting assembly, a hydraulic assembly, a control assembly, a vehicle carrying plate, an in-place detection sensor and an electromagnetic two-way stop valve. The lifting assembly and the in-place detection sensor are arranged on the lifting frame body; the lifting assembly is connected with the hydraulic assembly through the control assembly. The two opposite sides of the vehicle carrying plate are connected with the lifting assembly. And the electromagnetic two-way stop valve is connected with the hydraulic assembly. According to the embodiment of the utility model, under the combined action of the in-place detection sensor, the electromagnetic two-way stop valve and the control assembly, the synchronization performance of the hydraulic assemblies on the two sides can be controlled, the synchronism of the lifting assemblies connected with the two opposite sides of the vehicle carrying plate is improved, and the in-place accuracy of the lifting assemblies in the horizontal direction and the vertical direction is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to parking equipment technical field especially relates to micro lifting device. BACKGROUND

[0002] The working principle of the hydraulic driving type lifting device is that the pressure generated by the hydraulic pump drives the hydraulic cylinder to push the piston rod to move, thereby realizing the lifting action. The hydraulic driving type lifting device is widely used due to its advantages of being able to bear a large weight and being suitable for lifting various types of vehicles, which brings rich convenience and benefits to people's life and work.

[0003] However, due to the lack of mechanical synchronization in the lifting device, the synchronization of the left and right sides and the front and rear ends of the same side of the lifting platform is poor. Therefore, when the lifting platform is lifted by hydraulic power, the height of the left and right sides of the lifting platform will have a large deviation after the lifting platform is lifted to the specified position, so that the left and right sides are difficult to reach the same height. In addition, the two ends of the same side of the lifting platform also lack synchronization when parking, so that the accuracy of the parking of the lifting platform is low and the two ends are not on the same horizontal plane. SUMMARY

[0004] The utility model embodiment provides micro lifting device, aims at solving the problem of poor synchronization of the two sides of the lifting platform in the prior art micro lifting device and low accuracy of the two ends of the same side, different heights of the two sides when parking in place and different horizontal planes of the two ends of the same side.

[0005] The utility model embodiment provides a kind of micro lifting device, including lifting frame, lifting assembly, hydraulic assembly, control assembly, vehicle plate, in-place detection sensor and electromagnetic two-way stop valve;The lifting assembly and the in-place detection sensor are located on the lifting frame;The lifting assembly is connected with the hydraulic assembly by the control assembly;The opposite two sides of the vehicle plate are connected with the lifting assembly;The electromagnetic two-way stop valve is connected with the hydraulic assembly.

[0006] In some embodiments, the lifting frame includes a bottom plate, a plurality of columns, a connecting plate and a plurality of cross columns; the plurality of columns are fixedly connected to the first end surface of the bottom plate; a plurality of fixed columns are provided on the second end surface of the bottom plate, and the first end surface and the second end surface of the bottom plate are opposite; the connecting plate is fixed to the plurality of columns; both ends of the plurality of cross columns are fixedly connected to the plurality of columns through the connecting plate.

[0007] In some embodiments, the plurality of columns comprises a first column, a second column, a third column and a fourth column; the first column and the second column are arranged on the same side of the vehicle carrying plate, and the third column and the fourth column are arranged on the other side of the vehicle carrying plate; the first column and the fourth column are axisymmetric about the center line of the vehicle carrying plate, and the second column and the third column are axisymmetric about the center line of the vehicle carrying plate.

[0008] In some embodiments, the lifting frame further comprises a plurality of adapter plates and an inclined plate; the plurality of adapter plates are adjacent to the first column and the fourth column respectively, and are fixedly connected to the bottom plate; the two sides of the inclined plate are connected to the adapter plates respectively.

[0009] In some embodiments, the lifting assembly comprises a plurality of vertical rods and a plurality of horizontal rods; the plurality of vertical rods are connected to the plurality of columns respectively, and the plurality of vertical rods and the columns are provided with sliding rails therebetween; the two ends of the plurality of horizontal rods are fixedly connected to the plurality of vertical rods respectively.

[0010] In some embodiments, the plurality of horizontal rods comprises a first horizontal rod and a second horizontal rod; the first horizontal rod is parallel to the second horizontal rod; the two ends of the first horizontal rod are close to the top of the plurality of vertical rods; the two ends of the second horizontal rod are close to the bottom of the plurality of vertical rods.

[0011] In some embodiments, the lifting assembly further comprises a steel plate and a plurality of fixed plates; the steel plate is fixedly connected to the first horizontal rod, the second horizontal rod and the plurality of vertical rods; the plurality of fixed plates are vertically arranged between the first horizontal rod and the plurality of second horizontal rods, and are fixedly connected to the second end surface of the steel plate.

[0012] In some embodiments, the lifting assembly further comprises a first side plate and a second side plate; the vehicle carrying plate is located between the first side plate and the second side plate, and the opposite sides of the vehicle carrying plate are connected to the first side plate and the second side plate respectively; the first side plate and the second side plate are fixedly connected to the first end surface of the steel plate; the first end surface of the steel plate is opposite to the second end surface of the steel plate.

[0013] In some embodiments, the hydraulic assembly comprises a hydraulic station and a double-acting hydraulic cylinder; the hydraulic station is fixedly connected to the plurality of horizontal columns; one end of the double-acting hydraulic cylinder is connected to the hydraulic station, and the other end is connected to the first horizontal rod.

[0014] In some embodiments, the control assembly comprises a controller and a speed regulating valve; the controller is arranged on the second horizontal rod; the controller is electrically connected to the electromagnetic double-way stop valve.

[0015] The utility model embodiment provides micro lifting device, it includes lifting frame body, lifting assembly, hydraulic assembly, control assembly, load car plate, in place detection sensor and electromagnetic two way stop valve, lifting assembly and in place detection sensor are located on lifting frame body, lifting assembly passes through control assembly and hydraulic assembly connection, the opposite side of load car plate is connected with lifting assembly, electromagnetic two way stop valve is connected with hydraulic assembly. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the utility model embodiment technical scheme, below will to the embodiment description needed to use the drawing of simple introduction, obviously, the drawing in the following description is some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0017] Figure 1 The structure diagram of micro lifting device provided by the utility model embodiment is shown in the figure.

[0018] Figure 2 The top view structure schematic diagram of micro lifting device provided by the utility model embodiment is shown in the figure.

[0019] Figure 3 The front view structure schematic diagram of micro lifting device provided by the utility model embodiment is shown in the figure.

[0020] Figure 4 The side view structure schematic diagram of micro lifting device provided by the utility model embodiment is shown in the figure. DETAILED DESCRIPTION

[0021] The technical scheme in the utility model embodiment will be clearly and completely described below with the drawings in the utility model embodiment, obviously, the described embodiment is a part of the embodiment of the utility model, instead of all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] It should be understood that, when using in the specification and the appended claims, the terms "include" and "contain" indicate the existence of the described features, whole, step, operation, element and / or component, but do not exclude the existence or addition of one or more other features, whole, step, operation, element, component and / or its set.

[0023] It should also be understood that the terms used herein in the specification and the appended claims are for the purpose of describing particular embodiments and are not intended to limit the present application. As used in this specification and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0024] It should also be further understood that the term "and / or" as used herein in the specification and in the claims, if any, is intended to mean one or the other or both of the associated listed items, as well as all possible combinations of the items.

[0025] Please refer to Figures 1 to 4 , Figure 1 The structural schematic diagram of the micro-lifting device provided by the present application is shown in the following figure. Figure 2 The structural schematic diagram of the micro-lifting device provided by the present application is shown in the following figure. Figure 3 The structural schematic diagram of the micro-lifting device provided by the present application is shown in the following figure. Figure 4 The structural schematic diagram of the micro-lifting device provided by the present application is shown in the following figure.

[0026] Please refer to Figures 1 to 4 The micro-lifting device provided by the present application comprises a lifting frame 100, a lifting assembly 200, a hydraulic assembly 300, a control assembly, a vehicle loading plate 500, a position detection sensor 600 and an electromagnetic two-way stop valve 700. The lifting assembly 200 and the position detection sensor 600 are arranged on the lifting frame 100. The lifting assembly 200 is connected with the hydraulic assembly 300 through the control assembly. The opposite sides of the vehicle loading plate 500 are connected with the lifting assembly 200. The electromagnetic two-way stop valve 700 is connected with the hydraulic assembly 300.

[0027] In the embodiment, the in-place detection sensor 600 is arranged on the lifting frame 100. Meanwhile, the electromagnetic two-way stop valve 700 is arranged in the hydraulic pipeline (not shown in the figure) for controlling the flow direction of the hydraulic oil. During the lifting of the lifting assembly 200, the electromagnetic two-way stop valve 700 is opened to allow the hydraulic oil to flow from the hydraulic station 310 to the double-acting hydraulic cylinder 320, thereby providing power for the double-acting hydraulic cylinder 320. The electromagnetic two-way stop valve 700 controls the on-off of the oil circuit, and the double-acting hydraulic cylinder 320 is provided with the electromagnetic two-way stop valve 700 in the oil inlet pipeline and the oil outlet pipeline. During the lowering of the platform, the state of the electromagnetic two-way stop valve 700 is switched according to the specific control requirements to control the backflow direction of the hydraulic oil in the double-acting hydraulic cylinder 320. The flow rate of the hydraulic oil in the oil pipe is controlled by the speed regulating valve 410 in the control assembly to control the lifting speed of the lifting assembly 200. The in-place detection sensor 600 is fixed on the lifting frame 100 and monitors the position information of the vehicle loading plate 500 in real time.

[0028] Specifically, when the vehicle loading plate 500 needs to be lifted, the control system controls the hydraulic station 310 in the hydraulic assembly 300 to start and controls the electromagnetic two-way stop valve 700 to open. After the electromagnetic two-way stop valve 700 is opened, the hydraulic oil flows from the hydraulic station 310 to the double-acting hydraulic cylinder 320 under the action of pressure. Since the double-acting hydraulic cylinder 320 is connected with the lifting assembly 200, when the hydraulic oil enters the rodless cavity of the double-acting hydraulic cylinder 320, the piston moves to the rod cavity direction, and the piston rod extends to push the lifting assembly 200 to move upward along the lifting frame 100. Since the vehicle loading plate 500 is connected with the lifting assembly 200, the vehicle loading plate 500 also rises. The lifting assembly 200 and the in-place detection sensor 600 are arranged on the lifting frame 100. During the lifting process, the in-place detection sensor 600 can sense the proximity of the height of the lifting assembly 200 or the vehicle loading plate 500 around to the preset lifting height through infrared, ultrasonic, magnetic sensitive element or mechanical trigger and the like.

[0029] For example, if an infrared sensor is used, a reflective plate is provided on the lifting assembly 200 or the vehicle loading plate 500. When the lifting assembly 200 or the vehicle loading plate 500 rises to a position where the reflective plate is close to the in-position detection sensor 600, the in-position detection sensor 600 receives a reflected signal. When the vehicle loading plate 500 approaches the preset rising height, the in-position detection sensor 600 sends a signal to the control system. According to the signal, the control system sends an instruction to the electromagnetic two-way stop valve 700, so that the electromagnetic two-way stop valve 700 gradually reduces the flow of hydraulic oil to the double-acting hydraulic cylinder 320. When the vehicle loading plate 500 reaches the precise preset rising height, the in-position detection sensor 600 sends an accurate in-position signal, and the control system immediately instructs the electromagnetic two-way stop valve 700 to completely close, cutting off the flow channel of the hydraulic oil. At this time, the lifting assembly 200 stops rising due to the lack of pressure pushing from the hydraulic oil, and the vehicle loading plate 500 stably stops at the specified height.

[0030] When it is necessary to lower the vehicle loading plate 500, the control system sends an instruction to open the electromagnetic two-way stop valve 700 to open the electromagnetic two-way stop valve 700. At this time, the hydraulic oil enters the rod chamber from the rodless chamber of the double-acting hydraulic cylinder 320, pushing the piston to move in the direction of the rodless chamber, and the piston rod retracts to push the lifting assembly 200 to move downward along the lifting frame 100. At the same time, the vehicle loading plate 500 moves downward together with the lifting assembly 200. The in-position detection sensor 600 also constantly monitors the position of the vehicle loading plate 500 during the downward movement. For example, when the vehicle loading plate 500 descends to the specified position, it triggers the mechanical structure of the in-position detection sensor 600, generating a position signal. When the vehicle loading plate 500 approaches the preset lower end position, the in-position detection sensor 600 feeds back a signal to the control system. According to the signal, the control system controls the electromagnetic two-way stop valve 700 to gradually adjust the return speed of the hydraulic oil, so that the downward speed of the lifting assembly 200 slows down. Once the vehicle loading plate 500 accurately reaches the preset specified position, the in-position detection sensor 600 sends an in-position signal, and the control system controls the electromagnetic two-way stop valve 700 to close the hydraulic oil channel. The lifting assembly 200 stops descending, and the vehicle loading plate 500 accurately stops at the required height position, completing the descending action.

[0031] Through the close cooperation of the in-position detection sensor 600, the electromagnetic two-way stop valve 700, and the speed regulating valve 410 in the control assembly, the lifting action of the lifting assembly 200 can be accurately controlled, the vehicle loading plate 500 can be accurately parked at different height positions, and the safety and accuracy of the entire lifting platform are improved.

[0032] In addition, in the embodiment of the present application, the to-position detection sensor 600 and the electromagnetic two-way stop valve 700 are arranged on each column 120 in the lifting frame body 100. Through the joint action of the to-position detection sensor 600 and the electromagnetic two-way stop valve 700, the synchronization performance of the hydraulic assemblies 300 on both sides of the vehicle loading plate 500 can be controlled, the synchronization of the lifting assemblies 200 connected to the opposite sides of the vehicle loading plate 500 is improved, and the accuracy of the lifting assemblies 200 in the horizontal and vertical directions is improved, avoiding the problem that the two sides are at different heights and the two ends of the same side are at different horizontal planes when the lifting assemblies 200 stop at the position.

[0033] In an embodiment, as shown in Figure 1 The lifting frame body 100 includes a bottom plate 110, a plurality of columns 120, a connecting plate 130, and a plurality of cross columns 140. The plurality of columns 120 are fixedly connected to the first end surface of the bottom plate 110. The second end surface of the bottom plate 110 is provided with a plurality of fixed columns, and the first end surface of the bottom plate 110 is opposite to the second end surface. The connecting plate 130 is fixed to the plurality of columns 120. Both ends of the plurality of cross columns 140 are fixedly connected to the plurality of columns 120 through the connecting plate 130.

[0034] In the embodiment, the plurality of columns 120 are fixedly connected to the first end surface of the bottom plate 110, which builds a main support structure in the vertical direction for the entire lifting frame body 100. The columns 120 can effectively transmit the weight of the vehicle loading plate 500 and the vehicle to the bottom plate 110 and disperse it to the ground foundation contacted by the bottom plate 110. This vertical support structure increases the ability of the lifting frame body 100 to resist vertical pressure, ensuring that the entire micro-lifting device does not collapse or deform due to weight concentration during vehicle lifting.

[0035] The second end surface of the bottom plate 110 is provided with a plurality of fixed columns, which further enhances the connection stability of the lifting frame body 100 with the ground. The fixed columns can be inserted into the ground or connected with other fixing devices to prevent the lifting frame body 100 from moving in the horizontal direction. Especially when the vehicle enters or exits the vehicle loading plate 500 or encounters external force interference (such as slight collision, etc.), this fixing method can effectively keep the position of the lifting frame body 100 relatively stable.

[0036] The two ends of each horizontal column 140 are fixedly connected to the plurality of vertical columns 120 by the connecting plates 130, forming a space frame structure. The combination of the horizontal columns 140 and the connecting plates 130 increases the connection strength between the vertical columns 120, connecting each vertical column 120 on both sides of the vehicle loading plate 500 into a whole, so that the entire lifting frame 100 can better resist lateral forces. For example, when the vehicle is positionally offset on the vehicle loading plate 500, the space frame structure can effectively prevent the vertical columns 120 from bending or twisting, enhancing the stability of the lifting frame 100.

[0037] In an embodiment, the plurality of horizontal columns 140 includes a first horizontal column and a second horizontal column, the two ends of the first horizontal column are fixedly connected to the bottom of two vertical columns 120 on the same side of the vehicle loading plate 500 by the adapter plates 150, and the second horizontal column is located above the first horizontal column and its two ends are fixedly connected to the middle of two vertical columns 120 on the same side of the vehicle loading plate 500 by the adapter plates 150. The first horizontal column and the second horizontal column are respectively located at different heights, which has a layered reinforcing effect on the lifting frame 100. In addition, the connection between the two horizontal columns 140 between the two adjacent vertical columns 120 further effectively enhances the stability of the lifting frame 100.

[0038] Further, as shown in Figure 1 and Figure 2 The plurality of vertical columns 120 includes a first vertical column 121, a second vertical column 122, a third vertical column 123, and a fourth vertical column 124. The first vertical column 121 and the second vertical column 122 are arranged on the same side of the vehicle loading plate 500, and the third vertical column 123 and the fourth vertical column 124 are arranged on the other same side of the vehicle loading plate 500. The first vertical column 121 and the fourth vertical column 124 are symmetric about the center line axis of the vehicle loading plate 500, and the second vertical column 122 and the third vertical column 123 are symmetric about the center line axis of the vehicle loading plate 500.

[0039] In the embodiment, the opposite two sides of the vehicle carrying plate 500 are connected with the lifting assemblies 200 respectively, the lifting assemblies 200 are fixed on the lifting frame body 100, the lifting frame body 100 comprises a plurality of upright columns 120 and a plurality of cross columns 140. Specifically, the opposite two sides of the vehicle carrying plate 500 are respectively provided with two upright columns 120, and the two upright columns 120 on the same side are fixedly connected through a plurality of cross columns 140. That is, one side of the vehicle carrying plate 500 is provided with a first upright column 121 and a second upright column 122, the first upright column 121 and the second upright column 122 are fixed with a connecting plate 130, and the two ends of the plurality of cross columns 140 are fixed on the first upright column 121 and the second upright column 122 through the connecting plate 130 respectively. Similarly, the other side of the vehicle carrying plate 500 is provided with a third upright column 123 and a fourth upright column 124, the third upright column 123 and the fourth upright column 124 are fixed with a connecting plate 130, and the two ends of the plurality of cross columns 140 are fixed on the third upright column 123 and the fourth upright column 124 through the connecting plate 130 respectively. The first upright column 121 is opposite to the third upright column 123, and the second upright column 122 is opposite to the fourth upright column 124.

[0040] The vehicle carrying plate 500 is connected with the lifting frame body 100 through the lifting assemblies, when the vehicle is parked on the vehicle carrying plate 500, the weight of the vehicle on the vehicle carrying plate 500 can be evenly distributed to each upright column 120. When the vehicle is parked on the vehicle carrying plate 500, no matter the position of the gravity center of the vehicle, the symmetrical upright column 120 structure can ensure that the weight is balancedly supported in four directions, avoiding the lifting frame body 100 from tilting due to uneven weight distribution, that is, improving the overall stability of the lifting frame body 100.

[0041] Meanwhile, the in-place detection sensor 600 is arranged on each of the first upright column 121, the second upright column 122, the third upright column 123 and the fourth upright column 124. After the lifting assembly 200 is lifted to the specified position, the in-place detection sensor 600 sends an in-place signal to the control system, the control system receives the in-place signal and generates an opening or closing control signal of the electromagnetic two-way stop valve 700, and the electromagnetic two-way stop valve 700 performs corresponding actions according to the received response control signal. Under the joint action of the in-place detection sensor 600 and the electromagnetic two-way stop valve 700 on the four upright columns of the lifting frame body 100, the lifting action of the lifting assembly 200 is accurately controlled, the accurate parking of the vehicle carrying plate 500 at different height positions is realized, thereby improving the synchronization of the lifting assemblies 200 connected with the opposite two sides of the vehicle carrying plate 500, and improving the accuracy of the in-place of the lifting assemblies 200 in the horizontal and vertical directions.

[0042] In an embodiment, as Figure 1 , Figure 2 and Figure 3As shown, the lifting frame 100 further comprises a plurality of adapter plates 150 and an inclined plate 160; the plurality of adapter plates 150 are respectively adjacent to the first column 121 and the fourth column 124, and are fixedly connected to the bottom plate 110; the two sides of the inclined plate 160 are respectively connected to the adapter plates 150.

[0043] In the embodiment, the plurality of adapter plates 150 comprises a first adapter plate and a second adapter plate, the first adapter plate is adjacent to the first column 121, and the second adapter plate is adjacent to the fourth column 124, wherein the first adapter plate and the second adapter plate are located on the same side of the first column 121 and the fourth column 124. The arrangement of the first adapter plate and the second adapter plate is beneficial to the connection and fixation between the bottom plate 110 and the first column 121 and the fourth column 124, and is also beneficial to the connection and fixation of the inclined plate 160, so that the components such as the column 120, the bottom plate 110, the adapter plate 150 and the inclined plate 160 cooperate with each other to form an organic whole structure, which can better bear the weight of the vehicle and various external forces, and enhance the carrying capacity of the bottom of the lifting frame 100.

[0044] The inclined plate 160 is arranged between the first adapter plate and the second adapter plate, and is used for the transition of the vehicle to the vehicle loading plate 500. The inclined plate 160 can play a certain protection role to prevent foreign matters (such as small stones) from entering the bottom of the lifting frame 100, so as to ensure the normal operation of the lifting frame 100. In addition, from the appearance, the combination of the adapter plate 150 and the inclined plate 160 can make the bottom of the lifting frame 100 look more regular and beautiful. Moreover, the shape of the inclined plate 160 can play a certain guiding role, for example, when the vehicle enters and exits, it guides the driver to correctly park the vehicle on the vehicle loading plate 500, avoids the collision of the vehicle with the column 120 or other components, and improves the safety of operation.

[0045] In an embodiment, as shown in Figure 1 、 Figure 2 and Figure 4 , the lifting assembly 200 comprises a plurality of vertical rods 210 and a plurality of horizontal rods 220; the plurality of vertical rods 210 are respectively connected to the plurality of columns 120, and the plurality of vertical rods 210 and the columns 120 are provided with sliding rails; the two ends of the plurality of horizontal rods 220 are respectively fixedly connected to the plurality of vertical rods 210.

[0046] Further, the plurality of horizontal rods 220 comprises a first horizontal rod 221 and a second horizontal rod 222; the first horizontal rod 221 is parallel to the second horizontal rod 222; the two ends of the first horizontal rod 221 are close to the top of the plurality of vertical rods 210; the two ends of the second horizontal rod 222 are close to the bottom of the plurality of vertical rods 210.

[0047] In the embodiment, the cross bars 220 are used to fix and connect two adjacent vertical columns 120 on the same side of the vehicle loading plate 500. The cross bars 220 can increase the connection strength between the vertical rods 210. The two ends of the first cross bar 221 are fixedly connected to the top of the two adjacent vertical columns 120, and the two ends of the second cross bar 222 are fixedly connected to the bottom of the two adjacent vertical columns 120, so that the two vertical columns 120, the first cross bar 221 and the second cross bar 222 are fixedly connected to form a stable quadrilateral, which further enhances the stability of the overall frame structure of the lifting assembly 200. The two ends of the first cross bar 221 can be vertically fixed on the first vertical rod and the second vertical rod by welding, and the second cross bar 222 is parallel to the first cross bar 221. Similarly, the two ends of the first cross bar 221 on the other side of the vehicle loading plate 500 can be vertically fixed on the third vertical rod and the fourth vertical rod by welding, and the second cross bar 222 is parallel to the first cross bar 221.

[0048] Specifically, the plurality of vertical rods 210 includes a first vertical rod 211, a second vertical rod 212, a third vertical rod 213 and a fourth vertical rod 214. The first vertical rod 211 and the second vertical rod 212 are located on the same side of the vehicle loading plate 500, and the third vertical rod 213 and the fourth vertical rod 214 are located on the other side of the vehicle loading plate 500. The first vertical rod 211 is opposite to the fourth vertical rod 214, and the second vertical rod 212 is opposite to the third vertical rod 213. A sliding rail is arranged between each vertical rod 210 and each vertical column 120, so that the lifting assembly 200 can stably slide up and down along the vertical column 120. That is, a sliding rail is arranged between the first vertical rod 211 and the first vertical column 121, a sliding rail is arranged between the second vertical rod 212 and the second vertical column 122, a sliding rail is arranged between the third vertical rod 213 and the third vertical column 123, and a sliding rail is arranged between the fourth vertical rod 214 and the fourth vertical column 124.

[0049] In an embodiment, as shown in Figure 1 The lifting assembly 200 further includes a steel plate 230 and a plurality of fixing plates 240. The steel plate 230 is fixedly connected to the first cross bar 221, the second cross bar 222 and the plurality of vertical rods 210. The plurality of fixing plates 240 are vertically and spacedly arranged between the first cross bar 221 and the plurality of second cross bars 222, and are fixedly connected to the second end surface of the steel plate 230.

[0050] In the embodiment, the steel plate 230 can be fixed on the side of the first horizontal rod 221, the second horizontal rod 222 and the plurality of vertical rods 210 facing the vehicle plate 500 by welding or screwing. The steel plate 230 can enhance the overall rigidity of the lifting assembly 200. Due to its large area and certain thickness, it can effectively resist bending deformation. During lifting, especially when the vehicles on the vehicle plate 500 are unevenly distributed or the lifting assembly 200 is subjected to lateral force, the steel plate 230 can prevent relative displacement and deformation between the horizontal rods 220 and the vertical rods 210, ensure the shape stability of the entire lifting assembly 200, and thus provide stable support for the vehicle plate 500.

[0051] In an embodiment, as shown in Figure 1 and Figure 2 , the lifting assembly 200 further comprises a first side plate 250 and a second side plate 260; the vehicle plate 500 is located between the first side plate 250 and the second side plate 260, and the opposite sides of the vehicle plate 500 are connected with the first side plate 250 and the second side plate 260 respectively; the first side plate 250 and the second side plate 260 are fixedly connected on the first end surface of the steel plate 230; the first end surface of the steel plate 230 is opposite to the second end surface of the steel plate 230.

[0052] In the embodiment, one end of the first side plate 250 is fixedly connected on the steel plate 230, and the other end is movably connected with one side of the vehicle plate 500. One end of the second side plate 260 is fixedly connected on the steel plate 230, and the other end is movably connected with the other side of the vehicle plate 500. The first side plate 250 and the second side plate 260 are fixedly connected on the end surface of the steel plate 230, further strengthening the connection between the parts of the lifting assembly 200. They and the steel plate 230, the horizontal rods 220, the vertical rods 210 and other components jointly constitute a more complete structural system. When carrying the weight of vehicles and performing lifting action, the side plates can help to disperse and transmit force, so that the entire lifting assembly 200 works as a whole, enhancing the stability and carrying capacity of the structure.

[0053] In an embodiment, as shown in Figure 1 and Figure 4 , the hydraulic assembly 300 comprises a hydraulic station 310 and a double-acting hydraulic cylinder 320; the hydraulic station 310 is fixedly connected on the plurality of horizontal columns 140; the double-acting hydraulic cylinder 320 is connected at one end with the hydraulic station 310 and at the other end with the first horizontal rod 221.

[0054] In this embodiment, the hydraulic station 310 is fixed to the horizontal column 140 connected to the bottom of the column 120. The opposite sides of the vehicle loading plate 500 are movably connected to the first side plate 250 and the second side plate 260, respectively. The first side plate 250 and the second side plate 260 are both fixed to the steel plate 230. In other words, the lifting assembly 200 and the lifting frame 100 are installed on both sides of the vehicle loading plate 500. Therefore, the hydraulic station 310 and the double-acting hydraulic cylinder 320 are fixed to the horizontal column 140 of the lifting frame 100 on both sides of the vehicle loading plate 500 to achieve the lifting and lowering of the lifting assembly 200 on the opposite sides of the vehicle loading plate 500.

[0055] Specifically, the process of the lifting assembly performing the upward movement under the action of the hydraulic station 310 and the double-acting hydraulic cylinder 320 is as follows: the hydraulic station 310 is started, and the hydraulic pump in the hydraulic station 310 begins to work. The hydraulic pump draws hydraulic oil from the oil tank and delivers it to the rodless chamber of the double-acting hydraulic cylinder 320 at a certain pressure through the oil pipe. As the hydraulic oil is continuously injected, the pressure in the rodless chamber gradually increases, pushing the piston outward and extending the piston rod of the hydraulic cylinder. Since the piston rod is connected to the first cross bar 221, the extension of the piston rod will drive the first cross bar 221 to move upward. The upward movement of the first cross bar 221 is transmitted to the entire lifting assembly through the vertical rod 210 and the second cross bar 222, thereby driving the first side plate 250, the second side plate 260 and the vehicle loading plate 500 to rise.

[0056] The lifting assembly ascends under the influence of the hydraulic station 310 and double-acting hydraulic cylinder 320 as follows: The hydraulic station 310 controls the flow of hydraulic oil, directing it into the rodless chamber of the double-acting hydraulic cylinder 320 and out of the rod chamber. This causes the cylinder to extend, and the carrier plate rises with the lifting assembly. As the hydraulic oil flows from the rod chamber into the rodless chamber and out of the rodless chamber, the piston rod retracts, driving the first crossbar 221 downward, further lowering the entire lifting assembly and bringing the carrier plate 500 along with it.

[0057] Because the hydraulic oil pressure can be adjusted to meet the lifting requirements of vehicles of different weights, the double-acting hydraulic cylinder 320 can provide a greater lifting force. For heavier vehicles, the hydraulic station 310 can output higher pressure, allowing the hydraulic cylinder to generate sufficient force to smoothly lift the vehicle loading plate 500 and lifting assembly 200, ensuring the suitability and reliability of the device.

[0058] In one embodiment, if Figure 1 as well as Figure 4 As shown, the control component includes a controller and a speed regulating valve 410 ; the controller is disposed on the second crossbar 222 ; and the controller is electrically connected to the electromagnetic two-way stop valve 700 .

[0059] In this embodiment, the controller (not shown) is a switch for the control system, used to turn the control system on or off. A speed regulating valve 410 is disposed in a hydraulic line (not shown). The speed regulating valve 410 is used to adjust the lifting speed of the lifting assembly 200. For example, when carrying a heavier vehicle, the lifting speed can be appropriately reduced to ensure safety and stability, while when unloaded or lightly loaded, the speed can be increased to improve work efficiency. Furthermore, precise speed control can also reduce shock and vibration during the lifting process, avoiding injuries caused by large impacts during the lifting process.

[0060] The present invention provides a micro-lifting device, which includes a lifting frame 100, a lifting assembly 200, a hydraulic assembly 300, a control assembly, a vehicle carrier plate 500, an in-position detection sensor 600, and an electromagnetic two-way shut-off valve 700. The lifting assembly 200 and the in-position detection sensor 600 are disposed on the lifting frame 100. The lifting assembly 200 is connected to the hydraulic assembly 300 via the control assembly. The lifting assembly 200 is connected to opposite sides of the vehicle carrier plate 500. The electromagnetic two-way shut-off valve 700 is connected to the hydraulic assembly 300. In the embodiment of the present invention, the in-position detection sensor 600, the electromagnetic two-way shut-off valve 700, and the control assembly work together to control the synchronization performance of the hydraulic assemblies 300 on both sides, thereby improving the synchronization of the lifting assemblies 200 connected to the opposite sides of the vehicle carrier plate 500 and enhancing the accuracy of the lifting assemblies 200 in the horizontal and vertical directions.

[0061] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A micro-lifting device, characterized in that: It includes a lifting frame, a lifting component, a hydraulic component, a control component, a vehicle loading plate, an in-place detection sensor and an electromagnetic two-way shut-off valve; the lifting component and the in-place detection sensor are arranged on the lifting frame; the lifting component is connected to the hydraulic component through the control component; the opposite sides of the vehicle loading plate are connected to the lifting component; the electromagnetic two-way shut-off valve is connected to the hydraulic component.

2. The micro-lifting device according to claim 1, characterized in that: The lifting frame includes a base plate, several columns, a connecting plate and several horizontal columns; the several columns are fixedly connected to the first end face of the base plate; several fixing columns are provided on the second end face of the base plate, and the first end face of the base plate is opposite to the second end face; the connecting plate is fixed to the several columns; both ends of the several horizontal columns are fixedly connected to the several columns through the connecting plate.

3. The micro-lifting device according to claim 2, characterized in that: The plurality of columns include a first column, a second column, a third column and a fourth column; the first column and the second column are spaced apart and arranged on the same side of the vehicle loading plate, and the third column and the fourth column are spaced apart and arranged on the other same side of the vehicle loading plate; the first column and the fourth column are symmetrical about the center line axis of the vehicle loading plate, and the second column and the third column are symmetrical about the center line axis of the vehicle loading plate.

4. The micro-lifting device according to claim 3, characterized in that: The lifting frame also includes a plurality of adapter plates and inclined panels; the plurality of adapter plates are respectively adjacent to the first column and the fourth column, and are all fixedly connected to the base plate; both sides of the inclined panel are respectively connected to the adapter plates.

5. The micro-lifting device according to claim 2, characterized in that: The lifting assembly includes a plurality of vertical rods and a plurality of horizontal rods; the plurality of vertical rods are respectively connected to the plurality of vertical columns, and slide rails are provided between the plurality of vertical rods and the vertical columns; the two ends of the plurality of horizontal rods are respectively fixedly connected to the plurality of vertical rods.

6. The micro-lifting device according to claim 5, characterized in that: The plurality of crossbars include a first crossbar and a second crossbar; the first crossbar is parallel to the second crossbar; both ends of the first crossbar are close to the tops of the plurality of vertical poles; and both ends of the second crossbar are close to the bottoms of the plurality of vertical poles.

7. The micro-lifting device according to claim 6, characterized in that: The lifting assembly also includes a steel plate and several fixed plates; the steel plate is fixedly connected to the first cross bar, the second cross bar and the several vertical bars; the several fixed plates are vertically spaced between the first cross bar and the several second cross bars, and are fixedly connected to the second end surface of the steel plate.

8. The micro-lifting device according to claim 7, characterized in that: The lifting assembly also includes a first side panel and a second side panel; the vehicle loading plate is located between the first side panel and the second side panel, and the opposite sides of the vehicle loading plate are respectively connected to the first side panel and the second side panel; the first side panel and the second side panel are fixedly connected to the first end surface of the steel plate; the first end surface of the steel plate is opposite to the second end surface of the steel plate.

9. The micro-lifting device according to claim 6, characterized in that: The hydraulic assembly includes a hydraulic station and a double-acting hydraulic cylinder; the hydraulic station is fixedly connected to the plurality of crossbars; one end of the double-acting hydraulic cylinder is connected to the hydraulic station, and the other end is connected to the first crossbar.

10. The micro-lifting device according to claim 6, characterized in that: The control component includes a controller and a speed regulating valve; the controller is arranged on the second cross bar; and the controller is electrically connected to the electromagnetic two-way stop valve.

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