Lifting column machine core assembly

Abstract

A lifting column machine core assembly comprises a gas tank, a gas pump used for supplementing gas to the gas tank, a gas cylinder internally provided with a piston rod, a control valve, a first gas circuit and a second gas circuit, the gas cylinder is vertically arranged, the upper side of the gas cylinder is provided with an opening allowing the piston rod to stretch out and draw back, and the upper end of the piston rod is used for being connected with a lifting column. The control valve is provided with an air inlet communicated to the air tank and an air outlet communicated to the outside, one end of the first air channel is communicated to the control valve, the other end of the first air channel is communicated to the upper portion of the air cylinder, and one end of the second air channel is communicated to the control valve, and the other end of the second air channel is communicated to the lower portion of the air cylinder. According to the scheme, ascending and descending of the lifting column are achieved in a pneumatic mode, the structure is simple, operation is stable, only the control valve relates to low-voltage electrical control, safety is good, and good practicability is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lifting column, more particularly to a lifting column movement assembly. BACKGROUND

[0002] Road lifting column is a lifting column device installed in road, ground and other places, which realizes the vertical lifting of the column through intelligent control system, thereby implementing dynamic management on vehicle passing. As an important facility of modern traffic management, its core function lies in realizing the accurate control of traffic flow through physical isolation means. According to the difference of use scene, this kind of device can be divided into three types of full-automatic, semi-automatic and fixed type, among which the full-automatic lifting column is most widely used in important places due to its intelligent joint control characteristics. Its typical application scenes include school main gate vehicle control area, commercial complex underground garage entrance, government center emergency passage and the like, which can not only guarantee the daily passing demand, but also form an effective safety barrier in special period through linkage with management system.

[0003] The current mainstream hydraulic drive type lifting column mainly adopts the structure of oil pump driving oil cylinder. Specifically, the hydraulic system is composed of a high-pressure oil pump driven by a motor, a control valve group, an execution oil cylinder and a supporting pipeline. When receiving the lifting column instruction, the oil pump pushes the hydraulic oil into the upper cavity of the oil cylinder to push the piston rod to extend out; when lowering the column, the oil cylinder is filled with oil through the control valve group to complete the contraction action. Since the power required by the oil pump is large, it must rely on 220V or 380V industrial power supply, which may cause safety accidents due to leakage when encountering heavy rain or road waterlogging. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the problem in the prior art that the driving structure of the road lifting column has large power requirement of the oil pump, must rely on 220V or 380V industrial power supply, which may cause safety accidents due to leakage when encountering heavy rain or road waterlogging.

[0005] To solve the above problems, the utility model provides a lifting column movement assembly, which comprises a gas tank, a gas pump for supplementing gas to the gas tank, a gas cylinder with a piston rod inside, a control valve, a first gas path and a second gas path, the gas cylinder is arranged vertically and has an opening on the upper side for the piston rod to extend and retract, the upper end of the piston rod is used for connecting the lifting column, the control valve is provided with a gas inlet connected to the gas tank and a gas outlet connected to the outside, one end of the first gas path is connected to the control valve and the other end is connected to the upper part of the gas cylinder, one end of the second gas path is connected to the control valve and the other end is connected to the lower part of the gas cylinder.

[0006] In the above scheme, the air pump does not directly drive the piston rod of the air cylinder to extend or retract, but is used to continuously supplement the air tank with air, so the power required by the air pump is low, and low-voltage power supply can be used; the air tank drives the piston rod of the air cylinder to extend or retract through the control valve, specifically, when the control valve controls the first air path to be conductive with the air inlet and the second air path to be conductive with the air outlet, the air tank charges the upper part of the air cylinder through the first air path, so that the piston rod descends; when the control valve controls the first air path to be conductive with the air outlet and the second air path to be conductive with the air inlet, the air tank charges the lower part of the air cylinder through the second air path, so that the piston rod rises. Compared with the prior art, the above scheme realizes the rising and falling of the lifting column in the form of pneumatic, has simple structure and stable operation, and by taking the air tank as an intermediate air storage structure, the power required by the air pump is low, low-voltage power supply can be used, safety is good, and good practicability is achieved.

[0007] In an improved scheme, the air cylinder is located inside the air tank, the upper part of the air tank is provided with an opening for the upper end of the air cylinder to extend out, and the lower part of the air tank is provided with a base for the lower end of the air cylinder to be installed, so that the overall structure is compact and has high integration.

[0008] In an improved scheme, the air inlet of the control valve is provided with a primary pressure reducing valve, considering that the air pressure in the air tank is high, by additionally providing a primary pressure reducing valve at the air inlet, the air pressure of the first air path and the second air path is reduced, not only the air consumption is reduced, but also the stability of the air pressure flowing from the control valve to the first air path or the second air path is ensured.

[0009] In an improved scheme, a pressure switch acting on the air pump is further included, the pressure switch is used to detect the air pressure in the air tank, when the air pressure in the air tank is lower than a preset value, the pressure switch makes the air pump open and supplement the air tank with air; when the air pressure in the air tank is higher than the preset value, the pressure switch makes the air pump close, so that when the air in the air tank is consumed and the air pressure decreases, the pressure switch is automatically opened and the air pump supplements the air tank with air.

[0010] In an improved scheme, the base is provided with a drain hole, the drain hole is provided with a pressure limiting valve which is automatically opened when the air pressure reaches a preset value, so that when there is condensed water in the air tank, when the air pressure in the air tank reaches the preset value, the pressure limiting valve will be opened, and the condensed water can be discharged from the drain hole through the pressure limiting valve.

[0011] In an improved scheme, the drain hole is downwardly opened, the pressure limiting valve is located at the lower part of the drain hole, and the upper part of the drain hole is provided with a water overflow hole which is laterally opened, and the water overflow hole is provided with a second one-way valve with a direction from inside to outside, so that when the pressure limiting valve is closed, the backflow water can be discharged from the water overflow hole through the second one-way valve, and the backflow problem is avoided.

[0012] In an improved scheme, the base is provided with a recess, and the drain hole is located in the recess, so that the water in the gas tank can better gather to the drain hole.

[0013] In an improved scheme, the first gas path is provided with a secondary pressure reducing valve and a branch in parallel with the secondary pressure reducing valve, and the branch is provided with a first one-way valve with a direction from the cylinder to the gas tank. The secondary pressure reducing valve further reduces the gas supply pressure of the first gas path to the cylinder, so as to further reduce the gas consumption. At the same time, considering that the gas exhaust on the upper part of the cylinder cannot flow to the exhaust port through the secondary pressure reducing valve, a branch is added to the first gas path, so that the gas exhaust on the upper part of the cylinder can flow to the exhaust port from the first one-way valve of the branch. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall lifting column movement assembly;

[0015] Figure 2 It is a schematic diagram of the main view of the lifting column movement assembly;

[0016] Figure 3 It is a schematic diagram of the cross section of the lifting column movement assembly;

[0017] Figure 4 It is a schematic diagram of the cross section along the A-A section line; Figure 3

[0018] Figure 5 It is a schematic diagram of the cross section along the B-B section line; Figure 4

[0019] Figure 6 It is a schematic diagram of the principle of the lifting column movement assembly (at this time, the piston rod is in a lowered state);

[0020] Figure 7 It is a schematic diagram of the principle of the lifting column movement assembly (at this time, the piston rod is in a raised state).

[0021] BRIEF DESCRIPTION OF DRAWINGS,

[0022] 1, gas tank; 11, gas pump; 2, cylinder; 21, piston rod; 3, control valve; 31, primary pressure reducing valve; 4, first gas path; 41, secondary pressure reducing valve; 42, branch; 43, first one-way valve; 5, second gas path; 6, base; 61, recess; 62, drain hole; 63, overflow hole; 64, pressure limiting valve; 65, second one-way valve. DETAILED DESCRIPTION

[0023] ​​It should be understood by those skilled in the art that the following embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments as needed in order to adapt to specific application occasions.

[0024] In the description of the following embodiments, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0025] In the embodiments of the present application, unless otherwise explicitly specified and limited, the second feature is "on" or "under" the first feature. The second and first features can be in direct contact, or the second and first features can be in indirect contact through an intermediate medium. Moreover, the second feature "above", "over" and "on" the first feature can be that the second feature is directly above or obliquely above the first feature, or only indicates that the second feature is higher in horizontal height than the first feature. The second feature "below", "under" and "under" the first feature can be that the second feature is directly below or obliquely below the first feature, or only indicates that the second feature is lower in horizontal height than the first feature.

[0026] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0027] Please refer to Figures 1-5 The embodiment of the utility model provides a lift column machine core assembly, including gas tank, be used for to gas pump of gas tank supplement gas, inside be equipped with piston rod's cylinder, control valve, first gas path and second gas path, cylinder is along vertical arrangement and is equipped with the opening of piston rod telescopic in upper side, piston rod's upper end is used for connecting lift column, control valve is equipped with the gas inlet that links to each other to gas tank and the gas outlet that links to each other to outside, one end of first gas path links to each other to control valve and another end links to each other to cylinder upper part, one end of second gas path links to each other to control valve and another end links to each other to cylinder lower part.

[0028] Combined Figure 6 And Figure 7As shown in the above scheme, the air pump does not directly drive the piston rod of the air cylinder to stretch and retract, but is used to continuously supplement the air tank with air, so the power required by the air pump is low, and low-voltage power supply can be adopted; and the air tank drives the piston rod of the air cylinder to stretch and retract through the control valve. Specifically, when the control valve controls the first gas path to be conductive with the air inlet and the second gas path to be conductive with the air outlet, the air tank fills the upper part of the air cylinder through the first gas path, so that the piston rod descends; when the control valve controls the first gas path to be conductive with the air outlet and the second gas path to be conductive with the air inlet, the air tank fills the lower part of the air cylinder through the second gas path, so that the piston rod rises. Compared with the prior art, the above scheme realizes the rising and falling of the lifting column in the form of pneumatic, has simple structure and stable operation, and by taking the air tank as an intermediate air storage structure, the power required by the air pump is low, low-voltage power supply can be adopted, safety is good, and good practicability is achieved. It should be noted that the control valve belongs to the prior art, and the specific control principle will not be described here.

[0029] In the embodiment, the air tank is in a cylindrical structure with the axis along the vertical direction, and can also be in other common shapes. The air cylinder is located in the interior of the air tank. The upper part of the air tank is provided with an opening for the upper end of the air cylinder to extend out. The upper end of the air cylinder is sealed with the opening of the air tank. The lower part of the air tank is provided with a base for the lower end of the air cylinder to be installed, so that the overall structure is compact and has high integration.

[0030] The air pump is preferably a 24V air pump, and the number thereof can be multiple (two in the embodiment). As an improvement of the embodiment, the air inlet of the control valve is provided with a primary pressure reducing valve. That is, the air inlet is connected with the air tank through the primary pressure reducing valve. The structure is adopted because the air pressure in the air tank is high. By additionally providing the primary pressure reducing valve at the air inlet, the air pressure of the first gas path and the second gas path is reduced, which not only reduces the air consumption, but also ensures the stability of the air pressure flowing from the control valve to the first gas path or the second gas path.

[0031] Further, a pressure switch acting on the air pump is further included. The pressure switch is used to detect the air pressure in the air tank. When the air pressure in the air tank is lower than a preset value, the pressure switch makes the air pump open and supplement the air tank with air. When the air pressure in the air tank is higher than the preset value, the pressure switch makes the air pump close, so that when the air in the air tank is consumed and the air pressure decreases, the pressure switch is automatically opened, and the air pump supplements the air tank with air, ensuring that there is always sufficient air in the air tank.

[0032] As another improvement of the embodiment, the base of the embodiment is provided with a drain hole. The drain hole is provided with a pressure limiting valve which is automatically opened when the air pressure reaches a preset value, so that when there is condensed water in the air tank, the pressure limiting valve will be opened when the air pressure in the air tank reaches the preset value, and the condensed water can be discharged from the drain hole through the pressure limiting valve.

[0033] Further, the drain hole is downwardly formed, the pressure limiting valve is located at the lower part of the drain hole, the upper part of the drain hole is laterally formed with a water overflow hole, the water overflow hole is provided with a second one-way valve with a direction from inside to outside, so that when the pressure limiting valve is closed, the backflow water can be discharged from the water overflow hole through the second one-way valve, thereby avoiding the backflow problem.

[0034] Still further, the base is provided with a recess, and the drain hole is located in the recess, so that the water in the gas tank can be better collected to the drain hole.

[0035] As another optimization of the present embodiment, the first gas circuit is provided with a secondary pressure reducing valve and a branch in parallel with the secondary pressure reducing valve, and the branch is provided with a first one-way valve with a direction from the cylinder to the gas tank. When the lifting column needs to descend, the gas in the gas tank is reduced in pressure through the control valve and the first branch after the secondary pressure reducing valve, so that the gas pressure at the upper part of the cylinder is low, thereby reducing the gas consumption. Of course, due to the existence of the first one-way valve, the gas of the control valve cannot flow to the cylinder from the branch at this time. When the lifting column needs to ascend, the upper part of the cylinder needs to be exhausted. Considering that the gas at the upper part of the cylinder cannot flow to the exhaust port through the secondary pressure reducing valve when being exhausted, the branch is additionally provided in the first gas circuit, so that the gas at the upper part of the cylinder can flow to the exhaust port through the first one-way valve of the branch when being exhausted.

[0036] It should be noted that, in the description of the present application, the terms indicating the direction or position relationship are based on the direction or position relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application; all directional indications (such as up, down, left, right, front, back, inner, outer) are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture, and if the specific posture changes, the directional indications will also change accordingly.

[0037] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "in the present embodiment", "specific examples", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0038] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any changes or replacements within the technical scope disclosed by the present application can be easily conceived by the person skilled in the art, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A lift column movement assembly, characterized by, The utility model provides a kind of gas cylinder (1), gas pump (11) for supplementing gas to gas cylinder (1), cylinder (2) with piston rod (21) inside, control valve (3), first gas path (4) and second gas path (5) are included, the cylinder (2) is arranged along vertical and upper side is equipped with the opening for piston rod (21) telescopic, the upper end of piston rod (21) is used to connect lifting column, the control valve (3) is equipped with the gas inlet that is connected to gas cylinder (1) and the gas outlet that is connected to outside, one end of the first gas path (4) is connected to control valve (3) and the other end is connected to the upper portion of cylinder (2), one end of the second gas path (5) is connected to control valve (3) and the other end is connected to the lower portion of cylinder (2).

2. The lift column movement assembly of claim 1, wherein, The cylinder (2) is located inside the gas cylinder (1), the upper portion of the gas cylinder (1) is provided with an opening for the upper end of the cylinder (2) to protrude, and the lower portion of the gas cylinder (1) is provided with a base (6) for mounting the lower end of the cylinder (2).

3. The lift column movement assembly of claim 2, wherein, The gas inlet of the control valve (3) is provided with a primary pressure reducing valve (31).

4. The lift column movement assembly of claim 2, wherein, It further includes a pressure switch (12) acting on the gas pump (11), the pressure switch (12) is used to detect the gas pressure in the gas cylinder (1), when the gas pressure in the gas cylinder (1) is lower than the preset value, the pressure switch (12) makes the gas pump (11) open and supplement gas to the gas cylinder (1); when the gas pressure in the gas cylinder (1) is higher than the preset value, the pressure switch (12) makes the gas pump (11) close.

5. The lift column movement assembly of claim 3, wherein, The base (6) is provided with a drain hole (62), and the drain hole (62) is provided with a pressure limiting valve (64) that automatically opens after reaching the gas pressure.

6. The lift column movement assembly of claim 5, wherein, The drain hole (62) is downwardly provided, the pressure limiting valve (64) is located at the lower portion of the drain hole (62), the upper portion of the drain hole (62) is provided with a water overflow hole (63) to the side, and the water overflow hole (63) is provided with a second one-way valve (65) with a direction from inside to outside.

7. The lift column movement assembly of claim 5 or 6, wherein, The base (6) is provided with a recessed portion (61), and the drain hole (62) is located in the recessed portion (61).

8. The lift column movement assembly of claim 3, wherein, The first gas path (4) is provided with a secondary pressure reducing valve (41) and a branch (42) in parallel with the secondary pressure reducing valve (41), and the branch (42) is provided with a first one-way valve (43) with a direction from the cylinder (2) to the gas cylinder (1).

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