Pneumatic lifting ground column

Abstract

The utility model relates to a pneumatic lifting ground column. Comprising a fixed cylinder and a lifting cylinder, and the lower portion of the lifting cylinder is inserted into the upper portion of the fixed cylinder; a pneumatic driving assembly for driving the lifting barrel to do lifting movement is installed in the fixed barrel, the pneumatic driving assembly comprises a top base and a lifting air cylinder, the top of a cylinder body of the lifting air cylinder is fixedly connected with the bottom of the top base, and a lifting base is installed at the upper end of a piston rod of the lifting air cylinder; guide holes are formed in the two sides of the top base, guide rods are arranged in the guide holes, the upper ends of the guide rods are fixedly connected with the bottom of the lifting base, a supporting block is installed in the middle of the inner wall of the fixed barrel, the top base is fixedly connected with the supporting block, and the lifting base is located in a bottom opening of the lifting barrel and fixedly connected with the lifting barrel. The utility model provides a pneumatic lifting ground column which is stable in lifting action and capable of effectively keeping the lifting state of the ground column.

Description

TECHNICAL FIELD

[0001] The utility model belongs to traffic roadblock facility technical field, especially relates to a pneumatic lifting ground column. BACKGROUND

[0002] The lifting ground column is also called lifting road pile, anti-collision road pile, lifting column and isolation pile, and is widely applied to many occasions such as urban traffic, military and important government gate and periphery, pedestrian street, highway toll station, airport, school, bank and parking lot.The traffic order and the safety of main facilities and places are effectively guaranteed by limiting the passing vehicles.In structure, the lifting ground column is composed of a ground column body and a driving device, and the driving device drives the movable ground column in the ground column body to perform lifting action.

[0003] In order to solve the defects that the hydraulic facilities are difficult to construct, the construction cost is high and not easy to control, the pneumatic lifting address appears in the prior art.A pneumatic ground column is disclosed in the specification of Chinese utility model patent CN218667282U, which comprises a plurality of ground column devices and a compressed gas station, and further comprises a gas valve device and a manual control valve.The ground column device comprises an external cylinder, a lifting cylinder is arranged in the internal cylinder, and a gas connection joint is further arranged on the bottom side wall of the external cylinder.The pneumatic ground column disclosed in the utility model patent is connected between the fixed cylinder and the lifting cylinder by a sealing structure, and the lifting of the ground column is controlled by injecting compressed air into the cavity or discharging air from the cavity.The reliability of this lifting driving form is low: since the sealing structure has aging problem, when the sealing ring fails, the inside and the outside are substantially in communication, which leads to the outflow of internal air flow, so that the ground column cannot effectively maintain the current height, resulting in the failure of the lifting ground column.

[0004] In summary, a new type of pneumatic lifting ground column needs to be developed and designed to solve the foregoing technical problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a pneumatic lifting ground column, which has stable lifting action and can effectively maintain the lifting state of the ground column.

[0006] The utility model discloses a technical scheme that is: a pneumatic lifting ground column, comprising a fixed cylinder and a lifting cylinder, the lower part of the lifting cylinder is inserted into the upper part of the fixed cylinder, a pneumatic drive assembly for driving the lifting cylinder to move up and down is installed in the fixed cylinder, the pneumatic drive assembly comprises a top base and a lifting cylinder, the cylinder top of the lifting cylinder is fixedly connected with the bottom of the top base, a lifting base is installed on the upper end of the piston rod of the lifting cylinder, guide holes are arranged on the two sides of the top base and guide rods are arranged in the guide holes, the upper end of the guide rod is fixedly connected with the bottom of the lifting base, a support block is installed in the middle of the inner wall of the fixed cylinder and the top base is fixedly connected with the support block, the lifting base is located in the bottom opening of the lifting cylinder and is fixedly connected with the lifting cylinder.

[0007] Preferably, the pneumatic drive assembly further comprises a U-shaped connecting base, the lower ends of the two guide rods are fixedly connected with the connecting base, and the cylinder of the lifting cylinder is located in the middle notch of the connecting base.

[0008] Preferably, an upper buffer that cooperates with the bottom of the lifting base is installed on the top of the top base, and a lower buffer that cooperates with the bottom of the top base is installed on the top of the connecting base.

[0009] Preferably, wing plates that extend outward are arranged on the left and right sides of the top of the top base, the longitudinal section of the support block is L-shaped, the wing plates of the top base are lapped on the support block and are fixedly connected by radial mounting screws.

[0010] Preferably, a limiting stopper is arranged on the inner wall of the bottom opening of the lifting cylinder, the top of the lifting base is in contact with the bottom of the limiting stopper, a threaded hole is arranged at the center of the top of the lifting base, a countersunk hole is arranged at the center of the top of the lifting cylinder and a center long screw is arranged in the countersunk hole, and the lower end of the center long screw is located in the threaded hole of the lifting base.

[0011] Preferably, a gas joint is arranged on the side wall of the fixed cylinder, and the lifting cylinder is connected with the gas joint through the internal gas pipeline.

[0012] Preferably, the utility model further comprises a support panel with a stepped hole in the middle, an annular wing plate is arranged on the top opening of the fixed cylinder and falls into the stepped hole of the support panel, and the utility model further comprises a gland, the gland comprises a sleeve and an annular wing plate on the top outside of the sleeve, the sleeve of the gland is located between the inner wall of the fixed cylinder and the outer wall of the lifting cylinder, the annular wing plate of the gland falls on the annular wing plate on the top of the fixed cylinder, and the two annular wing plates and the support panel are fixedly connected by assembly bolts.

[0013] Preferably, a sealing ring with a sealing groove is arranged outside the bottom opening of the lifting cylinder, and a sealing ring is arranged in the sealing groove; a sealing groove is arranged on the outer wall of the top of the lifting cylinder, and a sealing gasket is arranged in the sealing groove, and when the lifting cylinder is fully lowered, the sealing gasket is located between the lifting cylinder and the gland.

[0014] The utility model discloses the advantages and positive effects are:

[0015] Compared with the existing pneumatic lifting ground column, the lifting ground column in the utility model adopts a pneumatic driving assembly based on a lifting cylinder as a driving assembly for driving the ground column to change shape, thereby solving the problem of air leakage caused by aging of the sealing structure when the existing pneumatic ground column facility uses the air cavity between the fixed cylinder and the lifting cylinder as a gas charging and discharging chamber, and the pneumatic lifting ground column can effectively maintain the lifting state and will not change shape automatically.

[0016] The pneumatic driving assembly structure of the pneumatic lifting ground column is compact, can provide stable lifting driving effect, and therefore the pneumatic lifting ground column has stable lifting action. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the front perspective structure schematic diagram of the utility model;

[0018] Figure 2 is Figure 1 the three-dimensional structure schematic diagram of the pneumatic driving assembly in

[0019] In the drawings:

[0020] 1, sealing gasket; 2, lifting cylinder; 3, center long screw; 4, gland; 5, sealing ring; 6, assembly screw; 7, support panel; 8, limit stopper; 9, mounting screw; 10, support block; 11, gas connection; 12, pneumatic driving assembly; 12-1, top base; 12-2, guide rod; 12-3, lifting cylinder; 12-4, lower buffer; 12-5, connecting base; 12-6, lifting base; 12-7, upper buffer; 13, fixed cylinder. DETAILED DESCRIPTION

[0021] In order to further understand the invention content, characteristics and effects of the utility model, the following examples are used for detailed description.

[0022] Please refer to Figure 1 and Figure 2 The pneumatic lifting ground column of the utility model comprises a fixed cylinder 13 and a lifting cylinder 2, the lower part of the lifting cylinder 2 is inserted into the upper part inside the fixed cylinder 13, and when installing, the fixed cylinder 13 is installed in the pit at the application site.

[0023] In this embodiment, the support panel 7 with a stepped hole in the middle is also included, and an annular wing plate is arranged outside the top opening of the fixed cylinder 13 and falls into the stepped hole of the support panel 7. In this embodiment, the gland 4 is also included, which comprises a sleeve and an annular wing plate outside the top of the sleeve. The sleeve of the gland 4 is located between the inner wall of the fixed cylinder 13 and the outer wall of the lifting cylinder 2, the annular wing plate of the gland 4 falls on the annular wing plate at the top of the fixed cylinder 13, and the two annular wing plates are fixedly connected with the support panel 7 by assembly bolts. After assembly, the upper surface of the gland 4 should be flush with the surface of the support panel 7, which can ensure the flatness of the top of the column and further ensure the flatness of the ground.

[0024] As shown in Figure 1 The support panel 7 is located at the top of the pit and closes the top of the pit. In actual application, the pit is constructed by a concrete structure at the application site, and the installation position of the support panel 7 is reserved at the top of the pit. When the support panel 7 is placed in the reserved installation position, the surface of the support panel 7 should be flush with the ground, which can ensure the flatness of the ground.

[0025] In this embodiment, a sealing ring 5 with a sealing groove is arranged outside the bottom opening of the lifting cylinder 2, and a sealing ring is installed in the sealing groove. The sealing ring is located between the sealing ring 5 and the inner wall of the fixed cylinder 13, and plays a sealing role. In this embodiment, a sealing groove is arranged on the top outer wall of the lifting cylinder 2, and a sealing gasket 1 is installed in the sealing groove. When the lifting cylinder 2 is fully lowered, the sealing gasket 1 is located between the lifting cylinder 1 and the gland 4, and plays a sealing role. The foregoing sealing structure is mainly used to avoid rainwater, dust and the like from entering the internal space of both the lifting cylinder 2 and the fixed cylinder 13.

[0026] A pneumatic driving assembly 12 for driving the lifting cylinder 2 to move up and down is installed in the fixed cylinder 13. Please refer to Figure 2 It can be seen that:

[0027] The pneumatic driving assembly 12 comprises a top base 12-1 and a lifting cylinder 12-3. The cylinder body top of the lifting cylinder 12-3 is fixedly connected with the bottom of the top base 12-1. The piston rod of the lifting cylinder 12-3 extends upward through the window arranged in the middle of the top base 12-1. A lifting base 12-6 is installed on the upper end of the piston rod of the lifting cylinder 12-3. When the piston rod of the lifting cylinder 12-3 performs the telescopic action, the lifting base 12-6 moves up and down.

[0028] The guide holes are arranged on both sides of the top base 12-1, and the guide rods 12-2 are arranged in the guide holes, and the upper ends of the guide rods 12-2 are fixedly connected with the bottom of the lifting base 12-6, in the embodiment, the pneumatic driving assembly 12 further comprises a U-shaped connecting base 12-5, the lower ends of the two guide rods 12-2 are fixedly connected with the connecting base 12-5, and the cylinder body of the lifting cylinder 12-3 is located in the middle notch of the connecting base 12-5. The connecting base 12-5 combines the lower ends of the two guide rods 12-2 into a whole, and by arranging the left and right two guide rods 12-2, the stability of the lifting base 12-6 during the lifting movement is improved.

[0029] In the embodiment, the upper buffer 12-7 matched with the bottom of the lifting base 12-6 is arranged on the top of the top base 12-1, and the lower buffer 12-4 matched with the bottom of the top base 12-1 is arranged on the top of the connecting base 12-5, the upper buffer 12-7 and the lower buffer 12-4 are used to produce elastic buffering effect when the pneumatic driving assembly 12 is in the fully retracted state and the fully extended state, so as to avoid rigid collision between components, play a protective role for the components, and avoid impact noise. The upper buffer 12-7 and the lower buffer 12-4 can be selected as ordinary spring buffer, gas spring buffer or buffer rubber block.

[0030] The support block 10 is arranged in the middle of the inner wall of the fixed cylinder 13, and the top base 12-1 of the pneumatic driving assembly 12 is fixedly connected with the support block 10, and the lifting base 12-6 of the pneumatic driving assembly 12 is located in the bottom opening of the lifting cylinder 2 and is fixedly connected with the lifting cylinder 2. In this way, when the lifting base 12-6 of the pneumatic driving assembly 12 is raised, the lifting cylinder 2 is driven to rise, and when the lifting base 12-6 of the pneumatic driving assembly 12 is lowered, the lifting cylinder 2 is driven to descend.

[0031] In the embodiment, the wing plates extending outward are arranged on the left and right sides of the top of the top base 12-1, forming an inverted stepped structure, the support block 10 has an L-shaped longitudinal section, and is welded and arranged on the inner wall of the fixed cylinder 13, the wing plates of the top base 12-1 are overlapped on the support block 10 and are fixedly connected by using radial mounting screws 9.

[0032] In this embodiment, a limiting block 8 is arranged on the inner wall of the bottom opening of the lifting cylinder 2, and the limiting block 8 is welded on the inner wall of the lifting cylinder 2. The top of the lifting base 12-6 is in contact with the bottom of the limiting block 8. A threaded hole is arranged at the center of the top of the lifting base 12-6, a countersunk screw hole is arranged at the center of the top of the lifting cylinder 2, and a center long screw 3 is arranged in the countersunk screw hole. The lower end of the center long screw 3 is located in the threaded hole of the lifting base 12-6. Therefore, the assembly mode is as follows: the lifting base 12-6 is embedded into the bottom opening of the lifting cylinder 2 upward until the top of the lifting base 12-6 is in contact with the limiting block 8, then the center long screw 3 is inserted downward from the top, and the center long screw 3 is rotated to make the lower end of the center long screw 3 screwed into the threaded hole of the top of the lifting base 12-6.

[0033] In this embodiment, a gas joint 11 is arranged on the side wall of the fixed cylinder 13, and the lifting cylinder 12-3 is connected with the gas joint 11 through the internal gas pipeline. The gas joint 11 is arranged to facilitate the connection between the pneumatic lifting ground column and the on-site control device. The control gas pipeline extended from the on-site control device is directly connected with the gas joint 11.

Claims

1. A pneumatic lift column, characterized by: The utility model relates to a lifting device, including fixed cylinder (13) and lifting cylinder (2), the lower part of lifting cylinder (2) is inserted in the upper portion inside of fixed cylinder (13), install pneumatic drive assembly (12) of driving lifting cylinder (2) and moving in the inside of fixed cylinder (13), pneumatic drive assembly (12) includes top base (12-1) and lifting cylinder (12-3), the cylinder body top of lifting cylinder (12-3) is fixedly connected with the bottom of top base (12-1), install lifting base (12-6) on the piston rod upper end of lifting cylinder (12-3), be equipped with guide rod (12-2) in the guide hole of both sides of top base (12-1) and be equipped with guide rod (12-2) in the guide hole, the bottom of lifting base (12-6) is fixedly connected with the upper end of guide rod (12-2), install support block (10) in the middle part of the inner wall of fixed cylinder (13) and top base (12-1) is fixedly connected with support block (10), lifting base (12-6) is located in the bottom mouth of lifting cylinder (2) and is fixedly connected with lifting cylinder (2).

2. The pneumatic lift column of claim 1, wherein: Pneumatic drive assembly (12) still includes the connecting base (12-5) of U shape, the lower end of two guide rods (12-2) is fixedly connected with connecting base (12-5), the cylinder body of lifting cylinder (12-3) is located in the middle slot of connecting base (12-5).

3. The pneumatic lift column according to claim 2, wherein the air cylinder is provided with a piston rod. The top of top base (12-1) is installed with the upper buffer (12-7) of cooperation with the bottom of lifting base (12-6), the top of connecting base (12-5) is installed with the lower buffer (12-4) of cooperation with the bottom of top base (12-1).

4. The pneumatic lift column according to claim 3, wherein the air cylinder is provided with a piston rod. The top of top base (12-1) is equipped with the wing plate of outward extension left and right sides, the longitudinal section of support block (10) is L shape, the wing plate of top base (12-1) is overlapped on support block (10) and is fixedly connected with radial mounting screw (9).

5. The pneumatic lift column according to claim 4, wherein the air cylinder is provided with a piston rod. The inner wall on the bottom mouth of lifting cylinder (2) is equipped with limit stop (8), the top of lifting base (12-6) is in contact with the bottom of limit stop (8), the top center of lifting base (12-6) is equipped with threaded hole, the top center of lifting cylinder (2) is equipped with counterbore and is equipped with center long screw (3) in counterbore, the lower end of center long screw (3) is located in the threaded hole of lifting base (12-6).

6. The pneumatic lift column of claim 5, wherein: The side wall of fixed cylinder (13) is equipped with gas connection (11), and lifting cylinder (12-3) is connected with gas connection (11) through internal gas pipeline.

7. The pneumatic lift column of claim 6, wherein: It further includes support panel (7) with stepped hole in the middle, and an annular wing plate is arranged on the top opening of the fixed cylinder (13) and falls into the stepped hole of the support panel (7); it further includes a gland (4), the gland (4) includes a sleeve and an annular wing plate located on the top outside of the sleeve, the sleeve of the gland (4) is located between the inner wall of the fixed cylinder (13) and the outer wall of the lifting cylinder (2), the annular wing plate of the gland (4) falls on the annular wing plate on the top of the fixed cylinder (13), and the two annular wing plates and the support panel (7) are fixedly connected by assembly bolts (6).

8. The pneumatic lift column of claim 7, wherein: The sealing ring (5) with sealing groove is arranged outside the bottom of the lifting cylinder (2), and the sealing ring is installed in the sealing groove; the sealing groove is arranged on the top outer wall of the lifting cylinder (2), and the sealing pad (1) is installed in the sealing groove; when the lifting cylinder (2) is fully lowered, the sealing pad (1) is located between the lifting cylinder (2) and the gland (4).

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