Universal anti-extrusion device and aerial work platform

Abstract

The utility model relates to the technical field of safety protection, in particular to a universal anti-extrusion device and an aerial work platform, the universal anti-extrusion device comprises two fixed seats which are oppositely arranged, a push rod is connected between the two fixed seats, the push rod is divided into two sections in the axial direction, and the two sections are respectively a first push rod and a second push rod; the first push rod is connected with one fixing base through a universal connector, and the second push rod is connected with the other fixing base through a universal connector. The first push rod and the second push rod are in magnetic connection. The safety protection device has the beneficial effects that the first push rod and the second push rod are connected with the corresponding fixing seats through the universal connectors, so that the first push rod and the second push rod can be pushed to be disconnected no matter which direction the first push rod and the second push rod are subjected to pressure from, an avoiding space is provided for an operator, the protection angle range is large, and the safety protection effect is good. And the first push rod and the second push rod can be disconnected in time when collision occurs, so that the operator cannot be secondarily hurt due to collision of the push rods.

Description

Technical Field

[0001] The utility model relates to the technical field of safety protection, in particular to a universal anti-extrusion device and an aerial work platform. Background Art

[0002] With the rapid development of the economy, the sales volume of aerial work vehicles has increased year by year, and the market demand for aerial work vehicles has continued to increase. However, aerial work vehicle operation accidents have continued to occur, which has led both manufacturers and operators of aerial work vehicles to place higher requirements on the safety of aerial work vehicles. In particular, the anti-crushing device on the aerial work platform, because the operator is facing away from the target height when ascending, it is easy to be squeezed by high-altitude obstacles, resulting in major accidents. For this reason, various anti-crushing devices have appeared on the market.

[0003] At present, the most common form of anti-crushing device is the swing arm type. When the operator is squeezed and injured, the swing arm will move through the guide rail to reach the end of the movement to provide a certain escape space. In addition, there are two other common types of anti-crushing devices: (1) flexible ropes with magnetic adsorption type circuit breakers. When the operator is squeezed and injured, the magnetic adsorption switch will disconnect the circuit; (2) a high protective railing is set at the back of the aerial work platform to achieve physical protection of part of the space.

[0004] However, the anti-extrusion devices in the above-mentioned prior art have certain deficiencies in practical applications. For example, most of the current swing-bar anti-extrusion devices are rail-type, which are essentially subjected to instantaneous extrusion and slide along the track. The operator is easily injured by the swing bar, and the direction of the rail is single, which means that the operator can only trigger the protection function of the swing bar when the force is applied in a single direction, and the protection angle range is limited; the pull rope switch and pull rope of the current anti-extrusion device of the flexible rope combined with the magnetic adsorption type circuit breaker are easily damaged; and the installation of a high-height guardrail at the back of the aerial work platform will increase the weight of the platform, reduce the stability of the whole machine, and affect normal construction operations. Utility Model Content

[0005] In order to solve the technical problems that the swing arm in the existing anti-extrusion device is easy to cause secondary damage to the operator and the protection angle range is small, the utility model provides a universal anti-extrusion device and an aerial work platform.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by a universal anti-extrusion device in the utility model is:

[0007] A universal anti-extrusion device includes two relatively arranged fixing seats, a push rod is connected between the two fixing seats, the push rod is divided into two sections in the axial direction, namely a first push rod and a second push rod, the first push rod and one fixing seat and the second push rod and the other fixing seat are both connected through a universal connector; the first push rod and the second push rod are magnetically connected.

[0008] With the above structural scheme, the first push rod and the second push rod are connected to the corresponding fixed seat by a universal connector. Therefore, no matter from which direction the first push rod and the second push rod are subjected to pressure, they can be pushed to disconnect, thereby making room for the operator to avoid. The protection angle range is large, and because the first push rod and the second push rod can be disconnected in time when a collision occurs, the operator will not suffer secondary injuries due to the collision of the push rods.

[0009] As a preferred implementation method of a universal anti-extrusion device, the universal connector includes a support, which is connected to a side of a fixed seat close to a push rod, and one end of the support close to the push rod is connected to a fixed cover, a spherical area is formed between the support and the fixed cover, a rolling ball is confined in the spherical area, the fixed cover has a through hole connected to the spherical area, one side of the rolling ball is connected to a ball rod, the ball rod extends from the through hole, the rolling ball can rotate in the spherical area driven by the ball rod, and the ball rod is connected to the end of the push rod close to the fixed seat.

[0010] With the above structural solution, the ball can roll within the spherical area but cannot escape under the restriction of the support and the fixed cover, and the structure is reliable.

[0011] As a preferred implementation of a universal anti-extrusion device, a radial dimension of a side of the through hole close to the support is greater than a radial dimension of a side of the through hole close to the push rod.

[0012] With the above structural scheme, during installation, the ball is first placed in the support, and then the through hole of the fixing cover is passed through the ball rod. After the fixing cover is connected to the support, the ball can be confined within the spherical area within the size limit of the fixing cover, so that the ball can roll within the spherical area without falling out, and the installation is convenient and reliable.

[0013] As a preferred implementation method of a universal anti-extrusion device, an end of the ball rod extending out of the through hole is provided with an external thread, an end of the push rod close to the fixed seat is provided with a first connecting hole, a first wire seat is provided in the first connecting hole, an end of the push rod extending out of the through hole is threadedly connected to the first wire seat, and a first fastening nut is connected between the push rod and the first wire seat.

[0014] By adopting the above structural solution, the connection structure between the golf club and the end of the push rod close to the fixing seat is firm and reliable, simple in structure and easy to install.

[0015] As a preferred implementation method of a universal anti-extrusion device, the end of the first push rod close to the second push rod is connected to a magnet assembly, and the end of the second push rod close to the first push rod is connected to an adsorption plate, and the magnet assembly and the adsorption plate can be magnetically connected; a proximity switch is provided at the end of the second push rod close to the first push rod, and the adsorption plate has a through hole, and the proximity switch passes through the opening in a direction away from the second push rod, and the proximity switch is electrically connected to the alarm.

[0016] With the above structural solution, the structure of the magnetic connection between the first push rod and the second push rod is firm and reliable, easy to install, and when the first push rod and the second push rod are disconnected, the proximity switch sends a disconnection signal and the alarm immediately sounds an alarm.

[0017] As a preferred implementation method of a universal anti-extrusion device, a second connecting hole is opened at one end of the first push rod close to the second push rod, a second wire seat is provided in the second connecting hole, the second wire seat is threadedly connected to one end of the external threaded column, the magnet assembly has a threaded hole, the threaded hole is threadedly connected to the other end of the external threaded column, and a second fastening nut is connected between the second wire seat and the magnet assembly.

[0018] By adopting the above structural solution, the connection between the first push rod and the magnet assembly is firm and reliable, the structure is simple and the cost is low.

[0019] As a preferred implementation method of a universal anti-extrusion device, a third connecting hole is opened at one end of the second push rod close to the first push rod, a third wire seat is provided in the third connecting hole, the adsorption plate is threadedly connected to the third wire seat by a screw, the proximity switch is installed in the third connecting hole, and the head of the proximity switch passes through the opening.

[0020] By adopting the above structural solution, the connection between the second push rod and the adsorption plate is firm and reliable, the structure is simple and the cost is low.

[0021] As a preferred implementation of a universal anti-extrusion device, the push rod includes a steel rod, the interior of the steel rod is hollow, and a silicone rubber sleeve is connected to the inner wall of the steel rod.

[0022] With the above structural solution, the interior of the push rod is hollow, which can reduce the weight of the push rod.

[0023] The technical solution adopted by an aerial work platform in the utility model is:

[0024] A high-altitude work platform comprises a platform body and any one of the universal anti-extrusion devices described above, wherein an operating platform and a guardrail are arranged on the platform body, and a guard plate is arranged on both sides of the operating platform, and each guard plate is connected to a fixing seat on one side close to the other guard plate.

[0025] As a preferred implementation of an aerial work platform, the guard plate is connected to the guardrail.

[0026] The beneficial effects of the utility model are:

[0027] The first push rod and the second push rod are connected to the corresponding fixed seats through a universal connector. Therefore, no matter from which direction the first push rod and the second push rod are subjected to pressure, they can be pushed to disconnect, thereby leaving space for the operator to avoid. The protection angle range is large, and because the first push rod and the second push rod can be disconnected in time when a collision occurs, the operator will not suffer secondary injuries due to the collision of the push rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a three-dimensional structural schematic diagram of an aerial work platform in a specific implementation mode of the utility model when the universal anti-extrusion device is in a closed state;

[0030] Figure 2 It is a schematic diagram of the three-dimensional structure of an aerial work platform in a specific implementation mode of the utility model when the universal anti-extrusion device is disconnected;

[0031] Figure 3 It is a schematic cross-sectional structure diagram of a universal anti-extrusion device in a specific implementation mode of the utility model;

[0032] Figure 4 for Figure 3 A magnified schematic diagram of the structure at center A;

[0033] Figure 5 for Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0034] Figure 6 It is a three-dimensional structural schematic diagram of a support of a universal anti-extrusion device in a specific implementation mode of the utility model;

[0035] Figure 7 It is a three-dimensional structural schematic diagram of a fixed cover of a universal anti-extrusion device in a specific implementation mode of the utility model;

[0036] Figure 8 It is a schematic cross-sectional structure diagram of a fixed cover of a universal anti-extrusion device in a specific implementation manner of the utility model.

[0037] List of parts and reference numerals:

[0038] 1. Platform body; 2. Operating table; 3. Guardrail; 4. Guard plate; 5. Fixed seat; 6. First push rod; 7. Second push rod; 8. Support; 9. Fixed cover; 10. Rolling ball; 11. Through hole; 12. Ball rod; 13. First thread seat; 14. First fastening nut; 15. Magnet assembly; 16. Adsorption plate; 17. Proximity switch; 18. Second thread seat; 19. External thread column; 20. Second fastening nut; 21. Third thread seat; 22. Screw; 23. Steel rod; 24. Silicone rubber sleeve; 25. Alarm. DETAILED DESCRIPTION

[0039] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the utility model will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] Reference Figure 1-2 This embodiment proposes an aerial work platform, including a platform body 1 and a universal anti-squeezing device. An operating platform 2 and a guardrail 3 are provided on the platform body 1. The overall height of the guardrail 3 is consistent. A guard plate 4 is provided on both sides of the operating platform 2, and the guard plate 4 is connected to the guardrail 3.

[0041] Reference Figure 3-8In this embodiment, a universal anti-extrusion device includes two relatively arranged fixing seats 5, and each guard plate 4 is connected to a fixing seat 5 on one side close to the other guard plate 4. A push rod is connected between the two fixing seats 5, and the push rod includes a steel rod 23. The steel rod 23 is hollow inside, and a silicone rubber sleeve 24 is connected to the inner wall of the steel rod 23. The push rod is divided into two sections in the axial direction, namely a first push rod 6 and a second push rod 7. The first push rod 6 and one fixing seat 5, and the second push rod 7 and the other fixing seat 5 are both connected through a universal connector. The universal joint includes a support 8, which is connected to a side of the fixed seat 5 close to the push rod, and an end of the support 8 close to the push rod is connected to a fixed cover 9, a spherical area is formed between the support 8 and the fixed cover 9, a ball 10 is restricted in the spherical area, and the fixed cover 9 is provided with a through hole 11 connected to the spherical area, the radial dimension of the through hole 11 close to the support 8 is larger than the radial dimension of the through hole 11 close to the push rod, and the diameter of the through hole 11 close to the push rod is smaller than the diameter of the ball 10 so that the ball 10 cannot escape from the spherical area. A ball rod 12 is connected to one side of the ball 10, and the ball rod 12 extends out from the through hole 11. The ball 10 can rotate in the spherical area driven by the ball rod 12. An end of the ball rod 12 extending out of the through hole 11 is provided with an external thread, and an end of the push rod close to the fixed seat 5 is provided with a first connecting hole, and a first wire seat 13 is provided in the first connecting hole. One end of the push rod extending out of the through hole 11 is threadedly connected to the first wire seat 13, so that the ball rod 12 is connected to the end of the push rod close to the fixed seat 5, and a first fastening nut 14 is connected between the push rod and the first wire seat 13.

[0042] A second connection hole is formed at one end of the first push rod 6 close to the second push rod 7, and a second wire seat 18 is provided in the second connection hole. The second wire seat 18 is threadedly connected to one end of the external thread column 19. A threaded hole is formed in the magnet assembly 15, and the threaded hole is threadedly connected to the other end of the external thread column 19. A second fastening nut 20 is connected between the external thread column 19 and the second wire seat 18, so that the magnet assembly 15 is fixedly connected to one end of the first push rod 6 close to the second push rod 7. A third connection hole is formed at one end of the second push rod 7 close to the first push rod 6, and a third wire seat 21 is provided in the third connection hole. The adsorption plate 16 is threadedly connected to the third wire seat 21 through a screw 22, so that the adsorption plate 16 is connected to one end of the second push rod 7 close to the first push rod 6. The magnet assembly 15 and the adsorption plate 16 can be connected by magnetic attraction, so that the first push rod 6 and the second push rod 7 are connected by magnetic attraction. The proximity switch 17 is installed in the third connecting hole, and the adsorption plate 16 has a through hole. The proximity switch 17 passes through the opening in the direction away from the second push rod 7, that is, the head of the proximity switch 17 passes through the opening. The proximity switch 17 is electrically connected to the alarm 25, and the alarm 25 is installed under the guard plate 4.

[0043] When the proximity switch 17 in this embodiment is close to the magnet assembly 15, the signal is in a connected state. When the proximity switch 17 is disconnected from the magnet assembly 15, the signal is disconnected and the alarm 25 immediately sounds an alarm.

[0044] In this embodiment, the first push rod 6 and the second push rod 7 are connected to the corresponding fixed seat 5 through a universal connector. Therefore, no matter which direction the first push rod 6 and the second push rod 7 are subjected to pressure, they can be pushed to disconnect, thereby leaving space for the operator and providing a large protection angle range.

[0045] The working principle of the utility model is:

[0046] When the operator's rear is squeezed in any direction, the operator will press against the push rod. At the moment when the push rod is under pressure from the operator, the magnetic connection between the magnet assembly 15 on the first push rod 6 and the adsorption plate 16 on the second push rod 7 can be disconnected in time to make room for the operator to avoid. Since the first push rod 6 and the second push rod 7 can be disconnected in time, there will be no strong collision between the operator and the push rod, so the operator will not suffer secondary injury due to the collision with the push rod. After the magnetic connection between the first push rod 6 and the second push rod 7 is disconnected, the signal of the proximity switch 17 is disconnected, and the alarm 25 immediately sounds an alarm. When the first push rod 6 and the second push rod 7 need to be reset, it is only necessary to bring the magnet assembly 15 on the first push rod 6 and the adsorption plate 16 on the second push rod 7 close together. Under the action of magnetic attraction, the two will automatically attract each other to reconnect.

[0047] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A universal anti-extrusion device, comprising two fixed seats (5) arranged opposite to each other, a push rod being connected between the two fixed seats (5), characterized in that: The push rod is divided into two sections in the axial direction, namely a first push rod (6) and a second push rod (7); the first push rod (6) and one fixed seat (5) and the second push rod (7) and another fixed seat (5) are both connected via a universal connector; the first push rod (6) and the second push rod (7) are magnetically connected.

2. A universal anti-extrusion device according to claim 1, characterized in that: The universal joint comprises a support (8), the support (8) being connected to a side of a fixed seat (5) close to a push rod, the end of the support (8) close to the push rod being connected to a fixed cover (9), a spherical area being formed between the support (8) and the fixed cover (9), a rolling ball (10) being restricted in the spherical area, the fixed cover (9) being provided with a through hole (11) connected to the spherical area, a ball rod (12) being connected to one side of the rolling ball (10), the ball rod (12) extending from the through hole (11), the rolling ball (10) being able to rotate in the spherical area under the drive of the ball rod (12), and the ball rod (12) being connected to an end of the push rod close to the fixed seat (5).

3. A universal anti-extrusion device according to claim 2, characterized in that: The radial dimension of the through hole (11) on the side close to the support (8) is greater than the radial dimension of the through hole (11) on the side close to the push rod.

4. A universal anti-extrusion device according to claim 2, characterized in that: One end of the ball rod (12) extending out of the through hole (11) is provided with an external thread, and the end of the push rod close to the fixing seat (5) is provided with a first connecting hole, a first thread seat (13) is provided in the first connecting hole, and one end of the push rod extending out of the through hole (11) is threadedly connected to the first thread seat (13), and a first fastening nut (14) is connected between the push rod and the first thread seat (13).

5. The universal anti-extrusion device according to claim 1, characterized in that: The end of the first push rod (6) close to the second push rod (7) is connected to a magnet assembly (15), and the end of the second push rod (7) close to the first push rod (6) is connected to an adsorption plate (16), and the magnet assembly (15) and the adsorption plate (16) can be connected by magnetic attraction; the end of the second push rod (7) close to the first push rod (6) is provided with a proximity switch (17), the adsorption plate (16) has a through hole, the proximity switch (17) passes through the hole in a direction away from the second push rod (7), and the proximity switch (17) is electrically connected to the alarm (25).

6. A universal anti-extrusion device according to claim 5, characterized in that: A second connecting hole is formed at one end of the first push rod (6) close to the second push rod (7), a second thread seat (18) is provided in the second connecting hole, the second thread seat (18) is threadedly connected to one end of the external thread column (19), the magnet assembly (15) is formed with a threaded hole, the threaded hole is threadedly connected to the other end of the external thread column (19), and the external thread column (19) is connected with a second fastening nut (20) between the second thread seat (18) and the magnet assembly (15).

7. A universal anti-extrusion device according to claim 5, characterized in that: A third connecting hole is formed at one end of the second push rod (7) close to the first push rod (6), a third threaded seat (21) is provided in the third connecting hole, the adsorption plate (16) is threadedly connected to the third threaded seat (21) via a screw (22), the proximity switch (17) is installed in the third connecting hole, and the head of the proximity switch (17) passes through the opening.

8. A universal anti-extrusion device according to any one of claims 1 to 7, characterized in that: The push rod comprises a steel rod (23), the interior of the steel rod (23) is hollow, and a silicone rubber sleeve (24) is connected to the inner wall of the steel rod (23).

9. An aerial work platform, characterized in that: The invention comprises a platform body (1) and a universal anti-extrusion device as claimed in any one of claims 1 to 8, wherein an operating table (2) and a guardrail (3) are provided on the platform body (1), and a guard plate (4) is provided on both sides of the operating table (2), and a side of each guard plate (4) close to another guard plate (4) is connected to a fixing seat (5).

10. The aerial work platform according to claim 9, characterized in that: The guard plate (4) is connected to the guardrail (3).

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