Hydraulic cylinder with bidirectional locking function
By designing a hydraulic cylinder with a two-way locking function, the problem of load loss caused by one-way locking of hydraulic cylinders in aerial work platforms and cranes was solved, realizing two-way movement and locking of the piston rod, and improving the stability and safety of the equipment.
Patent Information
- Application Number
- CN202520013651.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-03
AI Technical Summary
Existing hydraulic cylinders in aerial work platforms or cranes only have a one-way locking function, which cannot effectively resist forces in the non-working direction, leading to uncontrolled load and posing a safety hazard.
Design a hydraulic cylinder with bidirectional locking function. By setting symmetrical distribution of oil inlet and outlet in the cylinder barrel, electrical connection of limit ring and sensing plate, automatic control of micro air pump, and cooperation of elastic structure, bidirectional movement and locking of piston rod can be achieved.
It achieves precise control and safe locking of the hydraulic cylinder in bidirectional motion, prevents load runaway, improves the stability and safety of the equipment, and allows for flexible operation in complex working environments.
Smart Images
Figure CN223676673U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hydraulic cylinder technical field, concretely is a kind of hydraulic cylinder with bidirectional locking function. BACKGROUND
[0002] Hydraulic cylinder is the hydraulic energy conversion into mechanical energy, does linear reciprocating motion hydraulic actuator, it simple structure, work reliable, when it is used to realize reciprocating motion, can dispense with speed reducer, and there is no transmission gap, movement is stable, therefore in the hydraulic system of various machinery, it is widely used, hydraulic cylinder output force and the effective area of piston and the pressure difference of its two sides are proportional, hydraulic cylinder is basically composed of cylinder and cylinder cover, piston and piston rod, sealing device, buffer device and exhaust device, buffer device and exhaust device are determined according to specific application situation, other devices are essential.
[0003] The inventor finds that the prior art has the following problems in the process of realizing the utility model: 1. In many actual mechanical application scenarios, such as industrial automated production lines, engineering machinery and logistics equipment, reciprocating motion needs to be performed, for example, the material pushing device on the automated production line needs to push the material forward for processing, and then pull the processed material back to the initial position. If the piston rod can only move in one direction, it cannot meet the demand of such reciprocating action, which seriously limits the application of the hydraulic rod in such devices that require bidirectional action; 2. In some aerial work platforms or cranes and other equipment, the hydraulic rod functions to support the load. If only one-way locking is provided, when the equipment is in a force state in a non-working direction, for example, the crane is affected by lateral wind when hoisting goods, or the personnel on the aerial work platform moves to cause the center of gravity to shift, the hydraulic rod cannot be effectively locked to resist the force in the opposite direction, resulting in a loss of control of the load, which can cause serious accidents such as goods falling or the inclination of the work platform, posing a great threat to the safety of life and property. SUMMARY
[0004] The utility model aims at providing a kind of hydraulic cylinder with bidirectional locking function, to solve the problem that in some aerial work platforms or cranes and other equipment in the background art, the role of hydraulic rod is to support the load, if only one-way locking is provided, when the equipment is in a force state in a non-working direction, there is no locking force, causing the piston rod to move, causing the object above to fall. To achieve the above purpose, the utility model provides the following technical solutions: a kind of hydraulic cylinder with bidirectional locking function, including cylinder barrel, the outer wall of the cylinder barrel is welded with sliding cylinder;
[0005] The inside of the cylinder barrel is attached with a piston rod, one side of the piston rod is inserted with a moving piston, the groove of the moving piston is attached with a sealing ring, the upper part of the piston rod is provided with a limiting hole, the upper part of the cylinder barrel is welded with an oil inlet, the lower part of the cylinder barrel is welded with an oil outlet, the outer wall of the piston rod is welded with a limiting ring, the upper part of the limiting ring is embedded with a first induction sheet, one side of the first induction sheet is attached with a second induction sheet;
[0006] The inside of the sliding cylinder is inserted with a moving rod, the outer wall of the moving rod is wound with a spring, the outer wall of the moving rod is welded with a push block, the outer wall of the moving rod is welded with a fixing frame, the inside of the fixing frame is inserted with a gas conveying pipe, one side of the gas conveying pipe is inserted with a micro air pump, the lower part of the moving rod is welded with a plug.
[0007] Further preferably, the upper two ends of the cylinder barrel are horizontally distributed with oil inlets, and the lower two ends of the cylinder barrel are horizontally distributed with oil outlets.
[0008] Further preferably, the internal structure size of the cylinder barrel is consistent with the external structure size of the moving piston, the internal groove of the moving piston is consistent with the external structure size of the sealing ring, and the two sides of the moving piston are respectively provided with piston rods.
[0009] Further preferably, the external structure size of the first induction sheet on one side of the limiting ring is consistent with the external structure size of the second induction sheet on one side of the inner wall of the cylinder barrel, and the second induction sheet and the micro air pump are connected through a cable.
[0010] Further preferably, the external structure size of the plug is consistent with the internal structure size of the limiting hole.
[0011] Further preferably, the external structure size of the fixing frame is consistent with the internal structure size of the sliding cylinder, and the internal structure size of the fixing frame is consistent with the external structure size of the moving rod.
[0012] Further preferably, the push block is elastically structured through the spring.
[0013] Compared with the prior art, the hydraulic cylinder has the advantages that:
[0014] In the utility model, the hydraulic cylinder can push the material forward for processing and then pull back to the initial position, and the bidirectional movement capability makes the hydraulic cylinder meet the needs of accurate control of the material position and efficient flow in actual production, for example, in the industrial automatic production line, the bidirectional movement of the piston rod can realize the rapid pushing and recycling of the material, improve the production efficiency, and the bidirectional movement characteristic can make the equipment operate flexibly in different working stages and adapt to various complex working environments.
[0015] When the device is in a stress state in a non-working direction, for example, the crane is affected by lateral wind when hoisting goods, or the personnel on the aerial work platform moves to cause the gravity center to deviate, the bidirectional locking function hydraulic cylinder can effectively lock to resist the force in the opposite direction, and prevent the load from out of control, for example, during the crane working process, the bidirectional locking function can ensure that the hydraulic rod stably supports the load when affected by external forces such as lateral wind, and avoids goods falling, on the aerial work platform, the bidirectional locking function can prevent the platform from tilting due to the gravity center deviating caused by personnel movement, and ensure the safety of personnel life. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a front view structural schematic diagram of the utility model;
[0017] Figure 2 It is a side view structural schematic diagram of the utility model;
[0018] Figure 3 It is a cylinder barrel internal structure schematic diagram of the utility model;
[0019] Figure 4 It is a slide barrel internal structure schematic diagram of the utility model.
[0020] In the drawing: 1, cylinder barrel;101, limit hole;102, oil inlet;103, piston rod;104, first induction sheet;105, limit ring;106, oil outlet;107, moving piston;108, sealing ring;109, second induction sheet;2, slide barrel;201, moving rod;202, push block;203, spring;204, gas pipe;205, plug;206, micro air pump;207, fixed frame. DETAILED DESCRIPTION
[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill workers in the art without creative labor belong to the scope of protection of the utility model.
[0022] Please refer to Figures 1 to 4 The utility model provides a technical scheme: a hydraulic cylinder with bidirectional locking function, including cylinder barrel 1, the outer wall of cylinder barrel 1 is welded with slide barrel 2;
[0023] The inside of the cylinder barrel 1 is attached with a piston rod 103, one side of the piston rod 103 is inserted with a moving piston 107, the groove of the moving piston 107 is attached with a sealing ring 108, the upper part of the piston rod 103 is provided with a limiting hole 101, the upper part of the cylinder barrel 1 is welded with an oil inlet 102, the lower part of the cylinder barrel 1 is welded with an oil outlet 106, the outer wall of the piston rod 103 is welded with a limiting ring 105, the upper part of the limiting ring 105 is embedded with a first induction sheet 104, one side of the first induction sheet 104 is attached with a second induction sheet 109;
[0024] The inside of the sliding cylinder 2 is inserted with a moving rod 201, the outer wall of the moving rod 201 is wound with a spring 203, the outer wall of the moving rod 201 is welded with a push block 202, the outer wall of the moving rod 201 is welded with a fixing frame 207, the inside of the fixing frame 207 is inserted with a gas conveying pipe 204, one side of the gas conveying pipe 204 is inserted with a micro gas pump 206, the lower part of the moving rod 201 is welded with a plug 205.
[0025] As shown in Figure 1 、 Figure 2 and Figure 3 , the upper two ends of the cylinder barrel 1 are horizontally distributed with oil inlets 102, and the lower two ends of the cylinder barrel 1 are horizontally distributed with oil outlets 106; the oil inlets 102 are arranged at the upper two ends of the cylinder barrel 1, and the oil outlets 106 are arranged at the lower two ends, for the inlet and outlet of hydraulic oil, so as to drive the piston rod 103 and the moving piston 107 to move horizontally in the cylinder barrel 1, the design of the symmetrical oil inlets 102 and oil outlets 106 at both ends enables the piston rod 103 to be effectively driven by hydraulic oil no matter which direction it moves in the cylinder barrel 1, facilitating the bidirectional horizontal movement of the piston rod 103 in the cylinder barrel 1, and increasing the flexibility of the hydraulic cylinder work.
[0026] As shown in Figure 1 、 Figure 2 and Figure 3 , the internal structure size of the cylinder barrel 1 is consistent with the external structure size of the moving piston 107, the internal groove of the moving piston 107 is consistent with the external structure size of the sealing ring 108, and the moving piston 107 is respectively installed with a piston rod 103 on both sides; the moving piston 107 is installed in the cylinder barrel 1, and its size is matched with the internal structure of the cylinder barrel 1, which ensures the sealing performance, and the internal groove of the moving piston 107 is installed with the sealing ring 108, and the piston rod 103 is connected on both sides, the moving piston 107 is pushed by hydraulic oil to drive the piston rod 103 to move, the consistent size of the moving piston 107 and the cylinder barrel 1 can effectively prevent hydraulic oil from leaking, the sealing ring 108 further enhances the sealing performance, ensures the working efficiency of the hydraulic cylinder, and the piston rod 103 on both sides enables the power output to be realized in two directions, which expands the application range of the hydraulic cylinder, for example, it can be used in mechanical devices requiring bidirectional pushing and pulling force.
[0027] In this embodiment, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 1 , the outer structural size of the first induction sheet 104 on one side of the limiting ring 105 is consistent with the outer structural size of the second induction sheet 109 on one side of the inner wall of the cylinder 1, and the second induction sheet 109 is connected with the micro air pump 206 through the cable; when the first induction sheet 104 on one side of the limiting ring 105 is moved to adhere to the second induction sheet 109 on one side of the inner wall of the cylinder 1, the second induction sheet 109 transmits the signal to the micro air pump 206 through the cable, starts the micro air pump 206 to work, and the consistent size of the first induction sheet 104 and the second induction sheet 109 ensures the accuracy of the induction. This inductive triggering mechanism enables the micro air pump 206 to be automatically started according to the position of the piston rod 103, realizes reliable transmission of the signal through the cable connection, improves the automation degree of the whole device, and can accurately control the subsequent locking action.
[0028] In this embodiment, as shown in Figure 2 and Figure 3 , the external structural size of the plug block 205 is consistent with the internal structural size of the limiting hole 101; the consistent size of the plug block 205 and the limiting hole 101 enables the plug block 205 to be accurately inserted into the limiting hole 101 to limit the piston rod 103, and the precise size cooperation ensures the reliability of the locking, prevents the piston rod 103 from moving accidentally during the working process, and improves the safety and stability of the bidirectional locking hydraulic cylinder. This mechanical structure locking method is simple and effective, can bear a certain load force, and ensures that it can stably play a role when the position of the piston rod 103 needs to be locked.
[0029] In this embodiment, as shown in Figure 4 , Figure 3 and Figure 4 , the external structural size of the fixed frame 207 is consistent with the internal structural size of the sliding cylinder 2, and the internal structural size of the fixed frame 207 is consistent with the external structural size of the moving rod 201; the fixed frame 207 is installed inside the sliding cylinder 2, and its interior is used to install the moving rod 201. Through the size cooperation of the fixed frame 207, the sliding cylinder 2 and the moving rod 201, the moving rod 201 can stably move up and down in the sliding cylinder 2, and the size design of the fixed frame 207 ensures the directionality and stability of the movement of the moving rod 201, so that the moving rod 201 can accurately drive the plug block 205 to insert or leave the limiting hole 101 when the whole device is locking and unlocking, and at the same time, the good cooperation with the sliding cylinder 2 also helps to prolong the service life of the device and reduce the wear between parts.
[0030] In this embodiment, as shown in Figure 1As shown, the push block 202 is elastically structured by the spring 203; the push block 202 and the spring 203 are elastically structured, when the micro air pump 206 pushes the push block 202 to move downwards, the spring force of the spring 203 can drive the push block 202 to move upwards with the moving rod 201, so as to realize the unlocking action, the elastic structure enables the device to automatically recover to the initial state, facilitates the next locking operation, the spring force of the spring 203 can be designed according to actual needs, so as to realize the unlocking under the action of appropriate force, and the device can adapt to different working environments and working conditions, increase the flexibility and reliability of the hydraulic cylinder with the bidirectional locking function.
[0031] The use method and advantages of the utility model are as follows:
[0032] As shown in Figure 2 、 Figure 4 、 Figure 4 and Figure 1 Figure 2 Figure 3 Figure 4 , first, the oil inlet 102 enters the inside of the cylinder barrel 1, the piston rod 103 is horizontally pushed to one end of the cylinder barrel 1 with the moving piston 107, the first induction sheet 104 inlaid in the outer wall limiting ring 105 of the piston rod 103 is attached to the second induction sheet 109 on one side of the inner wall of the cylinder barrel 1, the second induction sheet 109 is connected with the micro air pump 206 cable, so that the micro air pump 206 transmits the gas into the gas conveying pipe 204, the gas pushes the push block 202, since a sealed environment is formed, the push block 202 is welded with the moving rod 201, the spring 203 is pushed downwards by the push block 202, the plug 205 below the moving rod 201 is clamped into the upper limiting hole 101 of the piston rod 103 to limit, the micro air pump 206 discharges the gas, the spring force of the spring 203 drives the push block 202 to move upwards with the moving rod 201 in the sliding cylinder 2, the limiting fixing assembly is arranged on both sides, so as to fix the piston rod 103 on both sides, the liquid in the cylinder barrel 1 is discharged through the oil outlet 106, since the oil inlet 102 and the oil outlet 106 are arranged on both sides of the cylinder barrel 1, the piston rod 103 can move horizontally in the cylinder barrel 1.
[0033] The above shows and describes the basic principle, main features and advantages of the utility model. The technical personnel in the industry should understand that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only preferred examples of the utility model, and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and equivalents thereof.
Claims
1. A hydraulic cylinder with bidirectional locking function, comprising a cylinder barrel (1), characterized in that: The outer wall of the cylinder (1) is welded with a sliding cylinder (2); The inside of the cylinder (1) is attached with a piston rod (103), one side of the piston rod (103) is inserted with a moving piston (107), the groove of the moving piston (107) is attached with a sealing ring (108), the upper part of the piston rod (103) is provided with a limiting hole (101), the upper part of the cylinder (1) is welded with an oil inlet (102), the lower part of the cylinder (1) is welded with an oil outlet (106), the outer wall of the piston rod (103) is welded with a limiting ring (105), the upper part of the limiting ring (105) is embedded with a first induction sheet (104), one side of the first induction sheet (104) is attached with a second induction sheet (109); The inside of the sliding cylinder (2) is inserted with a moving rod (201), the outer wall of the moving rod (201) is wound with a spring (203), the outer wall of the moving rod (201) is welded with a push block (202), the outer wall of the moving rod (201) is welded with a fixing frame (207), the inside of the fixing frame (207) is inserted with a gas conveying pipe (204), one side of the gas conveying pipe (204) is inserted with a micro air pump (206), the lower part of the moving rod (201) is welded with an insertion block (205).
2. The hydraulic cylinder with bidirectional locking function according to claim 1, characterized in that: The upper part of the cylinder (1) is horizontally distributed with an oil inlet (102) at both ends, and the lower part of the cylinder (1) is horizontally distributed with an oil outlet (106) at both ends.
3. The hydraulic cylinder with bidirectional locking function according to claim 1, characterized in that: The internal structure size of the cylinder (1) is consistent with the external structure size of the moving piston (107), the internal groove of the moving piston (107) is consistent with the external structure size of the sealing ring (108), and the two sides of the moving piston (107) are respectively installed with a piston rod (103).
4. The hydraulic cylinder with bidirectional locking function according to claim 1, characterized in that: The external structure size of the first induction sheet (104) on one side of the limiting ring (105) is consistent with the external structure size of the second induction sheet (109) on one side of the inner wall of the cylinder (1), and the second induction sheet (109) and the micro air pump (206) are connected through a cable.
5. The hydraulic cylinder with bidirectional locking function according to claim 1, characterized in that: The external structure size of the insertion block (205) is consistent with the internal structure size of the limiting hole (101).
6. The hydraulic cylinder with bidirectional locking function according to claim 1, characterized in that: The external structure size of the fixing frame (207) is consistent with the internal structure size of the sliding cylinder (2), and the internal structure size of the fixing frame (207) is consistent with the external structure size of the moving rod (201).
7. The hydraulic cylinder with bidirectional locking function according to claim 1, characterized in that: The push block (202) constitutes an elastic structure through the spring (203).