Anti-sliding device of aerial work platform

Abstract

The utility model discloses an aerial work platform anti-sliding device which comprises an air pump in signal connection with a vehicle body control center, an air pipe is arranged on the side edge of the air pump, a connector capable of being connected with a wheel valve of an aerial work platform is arranged at the end of the air pipe, and a through cavity is formed in the connector. A fixing plate which is arranged along the cross section of the through cavity and can move axially is arranged in the through cavity, an ejector rod which is coaxial with the through cavity and corresponds to a wheel valve core is arranged on the end face, facing the air outlet, of the fixing plate, and a plurality of air outlet holes communicated with the outside are formed in the side wall, corresponding to the peripheral side of the end of the ejector rod, of the through cavity. The aerial work platform has the advantages that the contact area between the wheel and the ground can be increased by reducing the air pressure of the wheel, so that the adhesive force of the wheel is enhanced, and sliding caused by sideslip of the aerial work platform is avoided.

Description

Technical Field

[0001] This utility model relates to an anti-slip device for aerial work platforms, and belongs to the technical field. Background Technology

[0002] In reality, aerial work platforms include a vehicle body for movement. The aerial work platform moves by using the vehicle body. In existing technology, the tire pressure and the coefficient of adhesion have a non-linear relationship. The lower the tire pressure, the larger the contact area between the tire and the ground, the greater the coefficient of adhesion, and the braking effect increases geometrically.

[0003] Because aerial work platforms are heavy machinery, when the vehicle is moving, the difference in rotation speed between the wheels on both sides can easily cause the vehicle to skid and slip, affecting its normal driving and even causing it to overturn, which is dangerous. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-slip device for aerial work platforms, which solves the problems of easy side slippage and slippage in the existing technology.

[0005] The above-mentioned technical objective of this utility model is mainly achieved through the following technical solution: an anti-slip device for aerial work platforms, including an air pump connected to the vehicle control center, an air pipe on the side of the air pump, a connector at the end of the air pipe that can be connected to the wheel valve of the aerial work platform, a cavity inside the connector, a fixed plate that is axially movable and arranged along the cross-section of the cavity, a push rod that is coaxially arranged with the cavity and corresponds to the wheel valve core on the end face of the fixed plate facing the air outlet, and multiple air outlet holes communicating with the outside are provided on the side wall of the cavity corresponding to the end of the push rod.

[0006] As a further preferred technical solution of this utility model, a fixed cylinder that can move axially is sleeved on the top rod near the fixed plate. The fixed cylinder is open at the end facing the air outlet and has an annular groove on the end face that corresponds to the side wall of the valve nozzle.

[0007] As a further preferred technical solution of this utility model, the fixing plate is provided with at least one first vent hole around the periphery of the top rod, and the fixing plate is provided with a fixing frame connected to the inner wall of the cavity on the side opposite to the surface of the top rod. At least one fixing post passing through the first vent hole is provided on the end face of the fixing frame, and a first sealing block cooperating with the first vent hole is provided on the fixing post.

[0008] As a further preferred technical solution of this utility model, the fixed cylinder includes a limiting plate arranged parallel to the fixed plate, and a plurality of second vent holes corresponding to the first vent hole are provided on the end face of the limiting plate. The fixed column extends to the inner side of the second vent hole and is provided with a second sealing block that cooperates with the second vent hole.

[0009] As a further preferred technical solution of this utility model, the diameter of the first vent is larger than the diameter of the second vent.

[0010] As a further preferred technical solution of this utility model, a telescopic spring is sleeved on the top rod, and an annular protrusion is provided on a section of the top rod located inside the fixed cylinder. One end of the telescopic spring is connected to the annular protrusion, and the other end of the telescopic spring is connected to the fixed cylinder.

[0011] As a further preferred technical solution of this utility model, the outer edge of the fixed cylinder end is provided with an outward protrusion extending toward the air outlet and abutting against the side wall of the air outlet. The side wall of the air outlet is provided with a groove, and a reset spring connected to the outward protrusion is provided in the groove.

[0012] As a further preferred technical solution of this utility model, at least one axially arranged sliding groove is provided on the inner wall of the cavity, a first slider is provided on the side wall of the fixed plate and located in the sliding groove and cooperating with the sliding groove, and a second slider is provided on the side wall of the fixed cylinder and located in the sliding groove and cooperating with the sliding groove.

[0013] Therefore, this utility model has the characteristics of increasing the contact area between the wheel and the ground by reducing the air pressure of the wheel, thereby strengthening the adhesion of the wheel and preventing the aerial work platform from slipping and sliding. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the present invention;

[0015] Figure 2 yes Figure 1 A cross-sectional view of the connector structure.

[0016] Reference numerals in the attached diagram: air pump 1, air pipe 2, connector 3, through cavity 31, air outlet 311, groove 312, return spring 313, slide groove 314, fixing plate 32, top rod 321, first vent 322, annular protrusion 323, first slider 324, fixing cylinder 33, annular groove 331, limiting plate 332, second vent 333, outward protrusion 334, second slider 335, fixing frame 34, fixing column 341, first sealing block 342, second sealing block 343, telescopic spring 35. Detailed Implementation

[0017] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0018] like Figure 1-2As shown, an anti-slip device for an aerial work platform includes an air pump 1 connected to the vehicle control center via a signal connection. An air pipe 2 is located on the side of the air pump 1. The air pump 1 is connected to the vehicle control center via both signal and electrical connections and is fixed to the vehicle body near the wheels. The input and output efficiency of the air pump 1 can be controlled. The end of the air pipe 2 is provided with a connector 3 that can connect to the wheel valve of the aerial work platform. The air pipe 2 is threadedly connected to the valve on the wheel via the connector 3. During operation, the connector 3 remains connected to the valve. The connector 3 has a cavity 31 inside, and a fixed plate 32 that is axially movable and arranged along the cross-section of the cavity 31 is provided within the cavity 31. A push rod 321, coaxially arranged with the cavity 31 and corresponding to the wheel valve core, is provided on the end face of the fixed plate 32 facing the air outlet. Multiple air outlet holes 311, communicating with the outside, are provided on the side wall of the cavity 31 corresponding to the end of the push rod 321. The cavity 31 is tubular. The structure is designed such that the fixed plate 32 is parallel to the cross section of the cavity 31 and can move axially within the cavity 31. The side wall of the fixed plate 32 is sealed and slidably fitted with the inner wall of the cavity 31. The push rod 321 is located at the axis of the cavity 31. When the vehicle body experiences sideslip and slips, the control center sends a signal to start the air pump 1. The air pump 1 outputs air, causing a certain pressure airflow to be discharged from the air pipe 2 to the connector 3. The airflow pushes the fixed plate 32, causing the fixed plate 32 to move axially. The push rod 321 moves synchronously with the fixed plate 32, pushing the valve core in the middle of the valve, opening the valve, and the air in the tire leaks out from the air outlet. The valve stops leaking air when the tire pressure is reduced by half. This ensures the normal rolling of the wheel while allowing the wheel to deflate, reducing the tire pressure, increasing the contact area between the wheel and the ground, thereby strengthening the wheel's adhesion, preventing the aerial work platform from sideslipping and slipping, and enhancing the safety of the aerial work platform during travel.

[0019] like Figure 2As shown, the inner wall of the cavity 31 is provided with two axially arranged sliding grooves 314. The side wall of the fixed plate 32 is provided with a first slider 324 located in the sliding grooves 314 and cooperating with the sliding grooves 314. When the fixed plate moves under the control of air pressure, the fixed plate moves axially along the sliding grooves through the first slider until the push rod pushes the valve core of the valve, causing the wheel to deflate. The side wall of the fixed cylinder 33 is provided with a second slider 335 located in the sliding grooves 314 and cooperating with the sliding grooves 314. The push rod 321 is fitted with an axially movable fixed cylinder 33 near the fixed plate 32. The fixed cylinder 33 has one end facing the air outlet. The air pump 1 is designed with an open shape and has an annular groove 331 on its end face that corresponds to the side wall of the valve. After the wheel pressure is reduced, the air pump 1 increases the output air pressure and pushes the fixed cylinder 33, so that the fixed cylinder 33 moves axially toward the valve until the side wall of the valve enters the annular groove 331 at the end of the fixed cylinder 33. A sealing gasket can be set in the annular groove 331 to enhance the sealing effect and prevent air leakage. At this time, the airflow output by the air pump 1 can enter the wheel through the valve. After the aerial work platform stops sliding, the wheel can be quickly and automatically re-inflated to restore the normal air pressure of the wheel and realize the normal rolling of the aerial work platform.

[0020] like Figure 2 As shown, the fixing plate 32 has multiple first vent holes 322 circumferentially arranged around the top rod 321. A fixing bracket 34 connected to the inner wall of the passage cavity 31 is provided on the side of the fixing plate 32 opposite to the surface of the top rod 321. The number of first vent holes 322 and second vent holes 333 can be set differently according to actual air pressure requirements. Multiple fixing posts 341 are provided on the end face of the fixing bracket 34, each passing through a first vent hole 322. A first sealing block 342 that mates with the first vent hole 322 is provided on each fixing post 341. The fixed frame 34 is a support structure that allows airflow. The fixed column 341 passes through the first vent 322 and the second vent 333 in sequence to fix the first sealing block 342 and the second sealing block 343. The fixed plate 32 is sealed to the first sealing block 342 through the first vent 322. The limiting plate 332 is sealed to the second sealing block 343 through the second vent 333. The first sealing block 342 can be separated from the first vent 322, and the second sealing block 343 can be separated from the second vent 333.

[0021] like Figure 2As shown, the fixed cylinder 33 includes a limiting plate 332 arranged parallel to the fixed plate 32. The end face of the limiting plate 332 is provided with multiple second vent holes 333 corresponding to the first vent hole 322. The second vent holes 333 communicate with the first vent holes 322. The fixed post 341 extends to the inside of the second vent holes 333 and is provided with a second sealing block 343 that cooperates with the second vent holes 333. The diameter of the first vent hole 322 is larger than the diameter of the second vent hole 333. When air pressure pushes the fixed plate 32 to move axially, the first vent hole 322 on the fixed plate 32 separates from the first sealing block 342. Until the push rod 321 pushes the valve core, the fixed plate 32 stops moving. After the wheel depressurization is complete, the air pump 1 continues to pressurize, pushing the fixed cylinder 33, causing the second vent hole 333 on the fixed cylinder 33 to leave the second sealing block 343, and the annular groove 331 at the end of the fixed cylinder 33 to lock onto the valve stem to form a seal. The first vent hole 322 and the second vent hole 333 are thus connected, and airflow can flow from the air pipe 2 through the first vent hole 322 and the second vent hole 333 and enter the valve to inflate the wheel. Thus, after depressurization is complete, the wheel can be automatically inflated to restore its original shape. The push rod 321 is then fitted with... A telescopic spring 35 is provided. A section of the top rod 321 located inside the fixed cylinder 33 has an annular protrusion 323. When the fixed plate 32 moves axially, the telescopic spring 35 is stretched. One end of the telescopic spring 35 is connected to the annular protrusion 323, and the other end is connected to the fixed cylinder 33. An outer protrusion 334 extending towards the vent 311 and abutting against the sidewall of the vent 311 is provided at the outer edge of the end of the fixed cylinder 33. A groove 312 is provided on the sidewall of the vent 311, and a return spring 313 connected to the outer protrusion 334 is provided within the groove 312. When the fixed cylinder 33 moves axially, the outer protrusion 334... 34 compresses the return spring 313, causing the return spring 313 to retract within the groove 312. Simultaneously, the outward protrusion 334 can cooperate with the fixed cylinder 33 to seal the air outlet 311, preventing air leakage during inflation. After the wheel is inflated, the air pump 1 stops, and the fixed plate 32 automatically moves back to its original position under the action of the telescopic spring 35, causing the first vent 322 and the first sealing block 342 to reconnect and seal. Meanwhile, the fixed cylinder 33, under the compression of the outward protrusion 334 by multiple return springs 313, automatically moves back to its original position, causing the second vent 333 and the second sealing block 343 to automatically reconnect and seal.

[0022] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. An aerial work platform anti-slip device, characterized by: The utility model provides a kind of air pump (1) connected with vehicle body control center signal, air pump (1) side is equipped with air pipe (2), air pipe (2) end is equipped with the connecting head (3) connectable with high-altitude work platform's wheel air valve, the inside of connecting head (3) is equipped with through cavity (31), through cavity (31) is equipped with fixed plate (32) in through cavity (31) section and can be axially moved, the end surface of fixed plate (32) is equipped with with through cavity (31) coaxial arrangement and with wheel air valve core corresponding jack (321) towards air outlet, the periphery of through cavity (31) side wall is equipped with multiple air outlet holes (311) corresponding to the end of jack (321) with outside communication.

2. The aerial work platform anti-slip device according to claim 1, characterized in that: Jack (321) is equipped with axially movable fixed cylinder (33) on the position close to fixed plate (32), and the end of fixed cylinder (33) towards air outlet is arranged in an open manner, and the end surface is equipped with annular clamping groove (331) corresponding to air valve nozzle side wall.

3. The aerial work platform anti drift device of claim 2, wherein: At least one first air hole (322) is annularly arranged on the fixed plate (32) corresponding to the periphery of the jack (321), and the side of the fixed plate (32) opposite to the surface where the jack (321) is located is equipped with a fixing frame (34) connected with the inner wall of the through cavity (31), and the end surface of the fixing frame (34) is equipped with at least one fixing column (341) penetrating through the first air hole (322), and the fixing column (341) is equipped with a first sealing block (342) matched with the first air hole (322).

4. The aerial work platform anti drift device of claim 3, wherein: The fixed cylinder (33) includes a limiting plate (332) arranged in parallel with the fixed plate (32), and the end surface of the limiting plate (332) is equipped with a plurality of second air holes (333) corresponding to the first air holes (322), and the fixing column (341) extends to the inside of the second air hole (333) and is equipped with a second sealing block (343) matched with the second air hole (333).

5. The aerial work platform anti drift device of claim 4, wherein: The aperture of the first air hole (322) is larger than the aperture of the second air hole (333).

6. The aerial platform anti-slip device according to claim 1, characterized in that: The jack (321) is sleeved with a telescopic spring (35), and the jack (321) is equipped with an annular protrusion (323) inside the fixed cylinder (33), one end of the telescopic spring (35) is connected with the annular protrusion (323), and the other end of the telescopic spring (35) is connected with the fixed cylinder (33).

7. The aerial platform anti-slip device according to claim 1, characterized in that: The outer edge of the end of the fixed cylinder (33) is equipped with an outer protrusion (334) extending towards the air outlet hole (311) and abutting against the side wall of the air outlet hole (311), and the side wall of the air outlet hole (311) is equipped with a groove (312), and the groove (312) is equipped with a reset spring (313) connected with the outer protrusion (334).

8. The aerial platform anti-slip device according to claim 2, characterized in that: The inner wall of the through cavity (31) is equipped with at least one axially arranged sliding groove (314), the side wall of the fixed plate (32) is equipped with a first sliding block (324) located in the sliding groove (314) and matched with the sliding groove (314), and the side wall of the fixed cylinder (33) is equipped with a second sliding block (335) located in the sliding groove (314) and matched with the sliding groove (314).

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