Synchronous distribution device enabling multiple multi-stage cylinders to synchronously ascend and descend at constant speed

Abstract

The utility model discloses a synchronous distribution device enabling a plurality of multi-stage cylinders to synchronously ascend and descend at a constant speed, which relates to the technical field of hydraulic pressure and comprises a mounting plate, a plurality of multi-stage cylinder bodies are movably hinged to the top surface of the mounting plate, and a plurality of mounting rings are fixedly mounted on the top surface of the mounting plate. The multi-stage cylinder body can be synchronously lifted through a connecting rod and a movable block, during use, a connecting plate of the multi-stage cylinder body needing to be synchronously lifted is pressed downwards to enable the movable block to extend out of the interior of the mounting box, then the connecting rod is taken up to clamp a clamping piece into a clamping groove, and at the moment, the clamping piece can clamp the position of the movable block; then a limiting bolt is rotated to penetrate through a clamping groove to be inserted into a movable block, then the limiting bolt fixes the position of a connecting rod through a clamping piece to connect the multi-stage cylinder bodies needing to be synchronously lifted, and at the moment, the multi-stage cylinder bodies can be synchronously lifted when being lifted; and the control precision of synchronous lifting of the device is prevented from being influenced by external factors.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulics, in particular to a synchronous distribution device which enables a plurality of multi-stage cylinders to rise and fall synchronously and at a uniform speed. Background Art

[0002] A multi-stage cylinder is a synchronous distribution device with an integral structure consisting of multiple self-continuous cylinder bodies, that is, a hydraulic cylinder with a multi-stage piston rod. The multi-stage cylinder synchronous distribution device is mainly used to ensure that in a hydraulic system, multiple multi-stage cylinders can move synchronously at the same speed and the same trajectory.

[0003] The existing synchronous distribution device that makes multiple multi-stage cylinders rise and fall synchronously at a uniform speed still has the following problems. The existing device generally makes multiple multi-stage cylinders rise and fall synchronously by controlling the electromagnetic distribution valve group. Reference is made to the patent application with publication number CN115030932A, which discloses a high-precision four-cylinder synchronous lifting hydraulic device and a cabin lifting method thereof, including a shunt motor, an electromagnetic distribution valve group, four lifting leg cylinders, a power unit and a tilt switch for sending signals. The electromagnetic distribution valve group is connected to the shunt motor, and each lifting leg cylinder is connected to the shunt motor respectively. The power unit is connected to the electromagnetic distribution valve group and each lifting leg cylinder respectively. The tilt switch is electrically connected to the electromagnetic distribution valve group. By using the tilt switch to monitor the horizontality error of the four lifting leg cylinders, the electromagnetic distribution valve group is adjusted to compensate for the lifting leg cylinders, thereby reducing the lifting synchronization error and improving the lifting stability.

[0004] However, the above-mentioned technology uses an electromagnetic distribution valve group to control the attack of the compensation hydraulic oil to achieve the synchronous lifting and lowering of the multi-stage cylinder. The existing device uses this method to control the synchronous lifting and lowering of the multi-stage cylinder, which may be affected by external factors, such as ambient temperature fluctuations, changes in hydraulic oil viscosity, and mechanical vibration interference. These factors may disturb the control accuracy of the electromagnetic distribution valve group, and its practicality is generally poor. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a synchronous distribution device that allows multiple multi-stage cylinders to rise and fall synchronously at a uniform speed, solving the problem that the existing synchronous distribution device that allows multiple multi-stage cylinders to rise and fall synchronously at a uniform speed may be affected by external factors and the control accuracy of the distribution components may be affected, and the practicality is generally poor.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a synchronous distribution device for causing multiple multi-stage cylinders to rise and fall synchronously and at a uniform speed, comprising a mounting plate, a top surface of which is movably hinged with a plurality of multi-stage cylinder bodies, a top surface of which is fixedly mounted a plurality of mounting rings, and a top surface of the plurality of multi-stage cylinder bodies provided with a synchronous distribution system for causing the plurality of multi-stage cylinder bodies to rise and fall synchronously, the multi-stage cylinder bodies comprising:

[0007] A control assembly is provided on the outside of the multi-stage cylinder body and is used to distribute and control the supply of hydraulic oil;

[0008] A connecting assembly is arranged on the outside of the multi-stage cylinder body and is used to enable several multi-stage cylinder bodies to be lifted and lowered synchronously. The connecting assembly includes an installation box fixedly installed on the bottom surfaces of the piston rods of the several multi-stage cylinder bodies. A movable block is movably installed inside the installation box. Notches are provided on the left and right sides of the installation box. Connecting plates are fixedly installed on the top surfaces of the left and right sides of the movable block. A spring is fixedly installed on the top surface of the inner cavity of the installation box. Limiting grooves are provided on the front and back sides of the inner cavity of the installation box. Limiting blocks are fixedly installed on the top surfaces of the front and back sides of the movable block. A clamping assembly is provided inside the movable block for connecting several multi-stage cylinder bodies together.

[0009] Preferably, the clamping assembly includes a clamping slot opened on the rear side of the movable block, a limiting bolt is threadedly installed on the bottom surface of the movable block, a connecting rod is movably installed inside the clamping slot, and a plurality of clamping parts are fixedly installed on the outside of the connecting rod.

[0010] Preferably, the bottom surface of the movable block moves through the interior of the installation box and extends to the bottom surface of the installation box, the side of the connecting plate away from the movable block moves through the interior of the slot and extends to the outside of the installation box, and the inner sides of the several mounting rings are tightly attached to the outer sides of the several multi-stage cylinder bodies.

[0011] Preferably, the bottom end of the spring is fixedly mounted on the top surface of the movable block, and one side of the limiting block is slidably mounted inside the limiting groove.

[0012] Preferably, the top thread of the limiting bolt passes through the bottom surface of the movable block and the interior of the clamping member and extends into the interior of the movable block, and the inner side of the clamping groove is tightly attached to the outer sides of the plurality of clamping members.

[0013] Preferably, the control component includes an oil inlet pipe fixedly installed on the input end of several multi-stage cylinder bodies, an electromagnetic proportional valve fixedly installed on the top end of the oil inlet pipe, an oil distribution pipe fixedly installed on the output end of the electromagnetic proportional valve, a cross pipe fixedly installed on the top end of the oil distribution pipe, and a connecting pipe fixedly installed on the top surface of the cross pipe.

[0014] Beneficial effects

[0015] The utility model provides a synchronous distribution device that enables multiple multi-stage cylinders to rise and fall synchronously at a uniform speed. Compared with the existing technology, it has the following advantages:

[0016] (1) The synchronous distribution device that enables multiple multi-stage cylinders to rise and fall synchronously at a uniform speed can make the multi-stage cylinder bodies rise and fall synchronously by means of the provided connecting rods and movable blocks. When in use, the connecting plate of the multi-stage cylinder body that needs to be raised and lowered synchronously is pressed downwards, so that the movable block extends out of the interior of the installation box. Then, the connecting rod is picked up and the clamping piece is clamped into the interior of the clamping slot. At this time, the clamping piece will clamp the position of the movable block. Then, the limiting bolt is rotated to pass through the clamping slot and inserted into the interior of the movable block. Then, the limiting bolt will fix the position of the connecting rod through the clamping piece. The multi-stage cylinder bodies that need to be raised and lowered synchronously are connected together. At this time, the multi-stage cylinder bodies will be raised and lowered synchronously when they are raised and lowered, avoiding the influence of external factors on the control accuracy of the synchronous raising and lowering of the device, and having good practicality.

[0017] (2) The synchronous distribution device that enables multiple multi-stage cylinders to rise and fall synchronously and at a uniform speed can control the distribution of hydraulic oil entering the interior of the multi-stage cylinder body through the electromagnetic proportional valve. When in use, the connecting pipe is connected to the external oil circuit. At this time, the hydraulic oil enters the interior of the cross pipe from the connecting pipe and is diverted to the interior of the electromagnetic proportional valve through the oil distribution pipe. Then the hydraulic oil will pass through the electromagnetic proportional valve and the oil inlet pipe into the interior of the multi-stage cylinder body. At the same time, the electromagnetic proportional valve will monitor the flow of hydraulic oil flowing into the interior of the multi-stage cylinder body and control compensation, so that the multi-stage cylinder body can be raised and lowered synchronously, which is very practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front-view stereoscopic appearance diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the rear-view stereoscopic appearance of the present invention;

[0020] Figure 3 This is a schematic diagram of the three-dimensional appearance of the connection component of the utility model;

[0021] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional appearance of the connection component of the present invention.

[0022] In the figure: 1-mounting plate, 2-synchronous distribution system, 21-control component, 211-oil inlet pipe, 212-solenoid proportional valve, 213-connecting pipe, 214-cross pipe, 215-oil distribution pipe, 22-connecting component, 221-mounting box, 222-connecting plate, 223-connecting rod, 224-spring, 225-clamping part, 226-movable block, 227-slot, 228-notch, 229-limiting bolt, 2210-limiting slot, 2211-limiting block, 3-multi-stage cylinder body, 4-mounting ring. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See Figure 1-Figure 4 , this utility model provides two technical solutions:

[0025] The first embodiment: A synchronous distribution device for causing multiple multi-stage cylinders to rise and fall synchronously and at a uniform speed, comprising a mounting plate 1, a plurality of multi-stage cylinder bodies 3 being movably hinged on the top surface of the mounting plate 1, and the plurality of multi-stage cylinder bodies 3 being linearly and evenly distributed on the top surface of the mounting plate 1, a plurality of mounting rings 4 being fixedly mounted on the top surface of the mounting plate 1, and a synchronous distribution system 2 being provided on the top surfaces of the plurality of multi-stage cylinder bodies 3 for causing the plurality of multi-stage cylinder bodies 3 to rise and fall synchronously, the multi-stage cylinder bodies 3 comprising:

[0026] The control assembly 21 is arranged outside the multi-stage cylinder body 3 and is used to distribute and control the supply of hydraulic oil;

[0027] The connecting assembly 22 is arranged on the outside of the multi-stage cylinder body 3 and is used to enable the multiple multi-stage cylinder bodies 3 to be lifted and lowered synchronously. The connecting assembly 22 includes a mounting box 221 fixedly mounted on the bottom surface of the piston rod of the multiple multi-stage cylinder bodies 3. A movable block 226 is movably mounted inside the mounting box 221. Notches 228 are provided on both sides of the mounting box 221. Connecting plates 222 are fixedly mounted on the top surfaces of the left and right sides of the movable block 226. A spring 224 is fixedly mounted on the top surface of the inner cavity of the mounting box 221. Limiting grooves 2210 are provided on the front and rear sides of the inner cavity of the mounting box 221. The movable block 22 6 The top surfaces of both the front and rear sides are fixedly installed with limit blocks 2211. The interior of the movable block 226 is provided with a clamping assembly for connecting several multi-stage cylinder bodies 3 together. The clamping assembly includes a clamping slot 227 opened on the rear side of the movable block 226. The bottom surface of the movable block 226 is threadedly installed with a limit bolt 229. The interior of the clamping slot 227 is movably installed with a connecting rod 223. The outside of the connecting rod 223 is fixedly installed with several clamping parts 225. The bottom surface of the movable block 226 movably passes through the interior of the installation box 221 and extends to the bottom surface of the installation box 221. The connecting plate 222 is away from the movable block 226. One side of the movable block 226 is movable through the interior of the slot 228 and extends to the outside of the mounting box 221, and pressing the connecting plate 222 can drive the movable block 226 to extend out of the interior of the mounting box 221. The inner sides of the plurality of mounting rings 4 are tightly attached to the outer sides of the plurality of multi-stage cylinder bodies 3, and the positions of the plurality of multi-stage cylinder bodies 3 can be fixed by the plurality of mounting rings 4. The bottom end of the spring 224 is fixedly mounted on the top surface of the movable block 226. When not in use, the movable block 226 can be pulled into the interior of the limiting groove 2210 by the tension of the spring 224, and one side of the limiting block 2211 is slidably mounted in the limiting groove 2210. The interior of the movable block 226 is provided with a limit block 2211, and the limit block 2211 can improve the stability of the lifting of the movable block 226 through the limit groove 2210. The top thread of the limit bolt 229 passes through the bottom surface of the movable block 226 and the interior of the clamping member 225 and extends to the interior of the movable block 226. The inner side of the clamping slot 227 is tightly attached to the outer side of the plurality of clamping members 225, and the connecting rod 223 can be clamped in the interior of the clamping slot 227 through the plurality of clamping members 225. Then, the limit bolt 229 is rotated to pass through the clamping slot 227 and insert into the interior of the movable block 226, so that the position of the connecting rod 223 can be fixed through the plurality of clamping members 225.

[0028] The multi-stage cylinder body 3 can be lifted and lowered synchronously by the provided connecting rod 223 and movable block 226. When in use, the connecting plate 222 of the multi-stage cylinder body 3 that needs to be lifted and lowered synchronously is pressed downward, so that the movable block 226 extends out of the interior of the installation box 221, and then the connecting rod 223 is picked up and the clamping piece 225 is clamped into the interior of the clamping groove 227. At this time, the clamping piece 225 will clamp the position of the movable block 226, and then the limiting bolt 229 is rotated to pass through the clamping groove 227 and inserted into the interior of the movable block 226. Then the limiting bolt 229 will fix the position of the connecting rod 223 through the clamping piece 225, and the multi-stage cylinder body 3 that needs to be lifted and lowered synchronously is connected together. At this time, the multi-stage cylinder body 3 will be lifted and lowered synchronously when it is lifted and lowered, avoiding the influence of external factors on the control accuracy of the synchronous lifting of the device, and having good practicality.

[0029] The second embodiment is mainly different from the first embodiment in that: the control component 21 includes an oil inlet pipe 211 fixedly installed at the input end of the plurality of multi-stage cylinder bodies 3, and an electromagnetic proportional valve 212 is fixedly installed at the top end of the oil inlet pipe 211. The model of the electromagnetic proportional valve 212 is 4WREH and is used to control the amount of hydraulic oil input into the plurality of multi-stage cylinder bodies 3. The output end of the electromagnetic proportional valve 212 is fixedly installed with an oil distribution pipe 215, and the top end of the oil distribution pipe 215 is fixedly installed with a cross pipe 214, and the top surface of the cross pipe 214 is fixedly installed with a connecting pipe 213.

[0030] The electromagnetic proportional valve 212 is provided to control the distribution of the hydraulic oil entering the multi-stage cylinder body 3. When in use, the connecting pipe 213 is connected to the external oil circuit. At this time, the hydraulic oil enters the interior of the cross pipe 214 from the connecting pipe 213 and is diverted to the interior of the electromagnetic proportional valve 212 through the oil distribution pipe 215. Then, the hydraulic oil passes through the electromagnetic proportional valve 212 and the oil inlet pipe 211 into the interior of the multi-stage cylinder body 3. At the same time, the electromagnetic proportional valve 212 monitors the flow of the hydraulic oil flowing into the multi-stage cylinder body 3 and performs control compensation, so that the multi-stage cylinder body 3 can be raised and lowered synchronously, which is practical.

[0031] At the same time, the contents not described in detail in this specification belong to the existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0032] When in use, the user installs the mounting plate 1 in a suitable position, then presses down the connecting plate 222 of the multi-stage cylinder body 3 that needs to be lifted synchronously so that the movable block 226 extends out of the interior of the mounting box 221, then picks up the connecting rod 223 and snaps the clamping piece 225 into the interior of the clamping groove 227, at this time the clamping piece 225 will clamp the position of the movable block 226, then rotate the limiting bolt 229 to pass through the clamping groove 227 and insert it into the interior of the movable block 226, then the limiting bolt 229 will fix the position of the connecting rod 223 through the clamping piece 225 to lift the multi-stage cylinder body 3 that needs to be lifted synchronously. The multi-stage cylinder body 3 is connected, so that the multi-stage cylinder body 3 can be raised and lowered synchronously without being affected by external factors. Then the connecting pipe 213 is connected to the external oil circuit. At this time, the hydraulic oil enters the interior of the cross pipe 214 from the connecting pipe 213 and is diverted to the interior of the electromagnetic proportional valve 212 through the oil distribution pipe 215. Then the hydraulic oil will pass through the electromagnetic proportional valve 212 and the oil inlet pipe 211 into the interior of the multi-stage cylinder body 3. At the same time, the electromagnetic proportional valve 212 will monitor the flow of the hydraulic oil flowing into the interior of the multi-stage cylinder body 3 and perform control compensation, so that the multi-stage cylinder body 3 can be raised and lowered synchronously.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include" or "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A synchronous distribution device for making multiple multi-stage cylinders rise and fall synchronously at a uniform speed, comprising a mounting plate (1), characterized in that: The top surface of the mounting plate (1) is movably hinged with a plurality of multi-stage cylinder bodies (3), the top surface of the mounting plate (1) is fixedly mounted with a plurality of mounting rings (4), and the top surfaces of the plurality of multi-stage cylinder bodies (3) are provided with a synchronous distribution system (2) for enabling the plurality of multi-stage cylinder bodies (3) to be synchronously raised and lowered. The multi-stage cylinder bodies (3) include: A control assembly (21) is arranged outside the multi-stage cylinder body (3) and is used to distribute and control the supply of hydraulic oil; A connecting assembly (22) is arranged on the outside of the multi-stage cylinder body (3) and is used to enable the multiple multi-stage cylinder bodies (3) to be lifted and lowered synchronously. The connecting assembly (22) comprises a mounting box (221) fixedly mounted on the bottom surfaces of the piston rods of the multiple multi-stage cylinder bodies (3). A movable block (226) is movably mounted inside the mounting box (221). Notches (228) are provided on both the left and right sides of the mounting box (221). Connecting plates (222) are fixedly mounted on the top surfaces of both the left and right sides of the movable block (226). A spring (224) is fixedly mounted on the top surface of the inner cavity of the mounting box (221). Limiting grooves (2210) are provided on both the front and rear sides of the inner cavity of the mounting box (221). Limiting blocks (2211) are fixedly mounted on the top surfaces of both the front and rear sides of the movable block (226). A clamping assembly is provided inside the movable block (226) and is used to connect the multiple multi-stage cylinder bodies (3) together.

2. A synchronous distribution device for causing multiple multi-stage cylinders to rise and fall synchronously and at a uniform speed according to claim 1, characterized in that: The clamping assembly comprises a clamping slot (227) provided on the rear side of a movable block (226); a limiting bolt (229) is threadedly installed on the bottom surface of the movable block (226); a connecting rod (223) is movably installed inside the clamping slot (227); and a plurality of clamping members (225) are fixedly installed on the outside of the connecting rod (223).

3. The synchronous distribution device for causing multiple multi-stage cylinders to rise and fall synchronously and at a uniform speed according to claim 1, characterized in that: The bottom surface of the movable block (226) movably passes through the interior of the installation box (221) and extends to the bottom surface of the installation box (221); the side of the connecting plate (222) away from the movable block (226) movably passes through the interior of the slot (228) and extends to the outside of the installation box (221); the inner sides of the plurality of mounting rings (4) are tightly attached to the outer sides of the plurality of multi-stage cylinder bodies (3).

4. The synchronous distribution device for causing multiple multi-stage cylinders to rise and fall synchronously and at a uniform speed according to claim 1, characterized in that: The bottom end of the spring (224) is fixedly mounted on the top surface of the movable block (226), and one side of the limiting block (2211) is slidably mounted inside the limiting groove (2210).

5. The synchronous distribution device for causing multiple multi-stage cylinders to rise and fall synchronously and at a uniform speed according to claim 2, characterized in that: The top thread of the limiting bolt (229) penetrates the bottom surface of the movable block (226) and the interior of the clamping member (225) and extends to the interior of the movable block (226). The inner side of the clamping groove (227) is tightly attached to the outer sides of the plurality of clamping members (225).

6. The synchronous distribution device for causing multiple multi-stage cylinders to rise and fall synchronously and at a uniform speed according to claim 1, characterized in that: The control assembly (21) comprises an oil inlet pipe (211) fixedly mounted on the input end of a plurality of multi-stage cylinder bodies (3); an electromagnetic proportional valve (212) is fixedly mounted on the top end of the oil inlet pipe (211); an oil distribution pipe (215) is fixedly mounted on the output end of the electromagnetic proportional valve (212); a transverse pipe (214) is fixedly mounted on the top end of the oil distribution pipe (215); and a connecting pipe (213) is fixedly mounted on the top surface of the transverse pipe (214).

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