Anti-falling device of lifting platform and lifting platform

Abstract

The utility model relates to the technical field of lifting equipment, in particular to an anti-falling device of a lifting platform and the lifting platform, and the anti-falling device comprises a first clamping piece and a second clamping piece, the second clamping pieces are arranged on the supporting column, the second clamping pieces are distributed in the longitudinal direction of the supporting column at intervals, and the second clamping pieces can be connected with one ends of the first clamping pieces in a clamped mode; and the telescopic component is hinged to the other end of the first clamping piece, and the telescopic component stretches out and draws back to drive the first clamping piece to slide. Locking can be formed, the possibility of falling of the platform is prevented, certain free movement can be achieved, and therefore the influence of acting force generated when loading equipment enters and exits the platform on the first clamping piece and the second clamping piece is reduced, the damage risk of the first clamping piece and the second clamping piece in the clamping state is effectively reduced, and the service life of the platform is prolonged. Therefore, the service life of the anti-falling device is prolonged, and the use safety of the lifting platform is improved.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and in particular to a fall prevention device for a lifting platform and a lifting platform. Background Technology

[0002] Large grain silos often use lifting platforms to assist cleaning equipment in and out of shallow circular silos, replacing traditional cranes or forklifts. These platforms have walking and steering capabilities, making them more efficient and safer. A lifting platform mainly consists of a lifting mechanism, a frame, and a traveling mechanism. The lifting mechanism of the platform carries the cleaning equipment up and down along the support columns. Furthermore, the cleaning equipment may move in or out of the lifting platform at high positions. Therefore, the most important indicator for a lifting platform is safety, especially safety measures in case the platform falls due to the failure of the lifting mechanism's wire rope.

[0003] Existing fall arrest structures typically utilize a power structure to drive a locking block that extends from the bottom of the platform and engages with mounting brackets on the side support columns to secure the platform and prevent it from falling further. However, once engaged with the mounting brackets, the existing locking block structure is subjected to the enormous impact force from the platform's fall. Because the locking block engages with the mounting brackets by sliding on the bottom of the platform, its structural robustness is not high, and it is prone to breakage under impact, thus affecting its fall arrest effectiveness. Its safety needs further improvement. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the sliding block used in the prior art, which is prone to breakage or damage under the impact of vehicles entering and exiting, thus affecting the anti-fall effect, and to provide an anti-fall device for a lifting platform and a lifting platform.

[0005] In a first aspect, the present invention provides a fall protection device for a lifting platform, comprising:

[0006] The first connector slides onto the platform;

[0007] The second snap-fit ​​component is provided on the support column. The second snap-fit ​​components are distributed longitudinally along the support column. The second snap-fit ​​component can snap-fit ​​one end of the first snap-fit ​​component.

[0008] A telescopic component is hinged to the other end of the first snap-fit ​​component, and the telescopic component can extend and retract to drive the first snap-fit ​​component to slide.

[0009] The anti-fall device for a lifting platform according to this utility model uses a first and a second locking member respectively located on the platform and the support column for locking engagement. However, the telescopic component that moves the first locking member closer to or away from the second locking member is hinged to the first locking member. This not only forms a lock to prevent the platform from falling, but also allows for a certain degree of freedom of movement. This reduces the impact of the force generated by loading equipment entering and exiting the platform on the first and second locking members, effectively reducing the risk of damage to the first and second locking members in the locked state, thereby extending the service life of the anti-fall device and improving the safety of the lifting platform.

[0010] The connection between the first and second snap-fit ​​components can adopt various existing forms, and the cross-sectional shapes of the first and second snap-fit ​​components themselves can also be selected in multiple ways. Telescopic components can be selected from electric actuators, hydraulic cylinders, linear modules, etc. The hinge method can be a planar revolute joint or a ball joint.

[0011] The number and spacing of the second connector along the support column are set according to actual needs, while the number, position and spacing of the first connector on the platform are set according to factors such as the platform shape and load-bearing capacity.

[0012] More preferably, the first snap-fit ​​component includes a pin, which is connected to the platform via a bushing, and the second snap-fit ​​component includes a slot.

[0013] More preferably, the bushing is located on a lifting seat on the top surface of the platform, and the lifting seat is used to connect the wire rope of the lifting mechanism.

[0014] The above setup helps to ensure the usable area of ​​the platform, facilitates the placement of the first connector, and makes it easier to observe its usage status and damage.

[0015] More preferably, the telescopic component is an electric push rod, which is hinged to the pin via a hinge shaft, the axial direction of which is parallel to the plane of the platform.

[0016] Preferably, the support column is also provided with a proximity switch, which is provided at the position of the second snap-fit ​​member and at the bottom of the support column.

[0017] By setting up proximity switches to improve the control precision of the platform's lifting and lowering, it is beneficial to further prevent falls.

[0018] Proximity switches can be selected from existing technologies such as inductive, capacitive, and magnetic types.

[0019] Preferably, it also includes a control system connected to the proximity switch, lifting mechanism and telescopic component.

[0020] More preferably, it also includes a buffer device located below the platform.

[0021] Buffer devices can be selected from types such as elastic buffer devices, hydraulic buffer devices, etc.

[0022] More preferably, the buffer device includes a plurality of polyurethane buffers, which are arranged in a staggered manner with respect to the hoisting position of the platform.

[0023] In a second aspect, the present invention provides a lifting platform, including a platform, a support column, a lifting mechanism, and a fall prevention device for a lifting platform as described above.

[0024] The lifting platform described in this utility model, with the aforementioned anti-fall device, can effectively prevent the movable platform from falling and overcome the force generated by loading equipment entering and exiting the movable platform, making the lifting platform safer and more reliable.

[0025] Preferably, the support column is provided with a guide rail, a limiting block is provided above the guide rail, and a first guide wheel and a second guide wheel are provided on the platform. The first guide wheel and the second guide wheel are respectively located on both sides of the guide rail, and the axial direction of the first guide wheel and the axial direction of the second guide wheel are perpendicular to each other.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0027] 1. This utility model provides a fall protection device for a lifting platform. By using a telescopic component that moves the first locking member closer to or further away from the second locking member and hinged to the first locking member, a locking mechanism can be formed to prevent the platform from falling. At the same time, it can also have a certain degree of freedom of movement, thereby reducing the impact of the force generated by the loading equipment entering and leaving the platform on the first and second locking members. This effectively reduces the risk of damage to the first and second locking members in the locked state, thereby extending the service life of the fall protection device and improving the safety of the lifting platform.

[0028] 2. This utility model provides a lifting platform that uses the above-mentioned anti-fall device, which can effectively prevent the moving platform from falling and overcome the force generated by loading equipment entering and leaving the moving platform, making the lifting platform safer and more reliable. Attached Figure Description

[0029] Figure 1 A three-dimensional schematic diagram of a fall protection device for a lifting platform;

[0030] Figure 2 A partial cross-sectional view of a fall protection device for a lifting platform;

[0031] Figure 3 A three-dimensional diagram of a lifting platform Figure 1 ;

[0032] Figure 4 A three-dimensional diagram of a lifting platform Figure 2 .

[0033] Marked in the image:

[0034] 00-Platform, 01-Support column, 02-Lifting seat, 1-First snap-fit ​​component, 11-Shaft sleeve, 2-Second snap-fit ​​component, 3-Telescopic component, 4-Hinge shaft, 5-Proximity switch, 6-Polyurethane buffer, 7-Guide rail, 71-Limit stop, 72-First guide wheel, 73-Second guide wheel. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0036] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0037] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0038] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0039] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0040] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0041] Example 1

[0042] like Figures 1-2 As shown, a fall protection device for a lifting platform includes:

[0043] The first connector 1 is slidably connected to platform 00;

[0044] The second snap-fit ​​2 is provided on the support column 01. The second snap-fit ​​2 is distributed longitudinally along the support column 01. The second snap-fit ​​2 can snap-fit ​​one end of the first snap-fit ​​1.

[0045] The telescopic component 3 is hinged to the other end of the first snap-fit ​​component 1, and the telescopic component 3 can extend and retract to drive the first snap-fit ​​component 1 to slide.

[0046] Proximity switch 5;

[0047] The control system is connected to the proximity switch 5, the lifting mechanism, and the telescopic component 3.

[0048] For example, the top surface of platform 00 is provided with a hoisting seat 02, which is used to connect the wire rope of the lifting mechanism. The first locking member 1 includes a pin, which is connected to the hoisting seat 02 through a bushing 11. The second locking member 2 includes a slot, and several slots are arranged longitudinally along the support column 01, such as on one side of the guide rail 7. A proximity switch 5 is provided next to the slot. The telescopic component 3 is an electric push rod, which is hinged to the pin through a hinge 4. The axial direction of the hinge 4 is parallel to the plane where the platform 00 is located.

[0049] A proximity switch 5 is also provided at the bottom of the support column 01, and a buffer device is also provided below the platform 00. The buffer device is used to absorb the impact force brought about by the descent of the platform 00. For example, the buffer device includes several polyurethane buffers 6, which are staggered from the hoisting position of the platform 00, that is, they are not set directly below the hoisting seat 02. Figure 3-4 As shown.

[0050] The electric push rod can drive the pin to reciprocate within the bushing 11. When the platform 00 reaches the target slot, the electric push rod drives the pin to extend and insert into the slot, effectively connecting the platform 00 with the support column 01, thereby firmly locking the platform 00 at the target height and effectively preventing the platform 00 from falling. The impact of the force generated by the loading equipment entering and exiting the platform 00 on the pin is effectively mitigated by the hinge 4, thereby reducing damage to the pin.

[0051] The control system can turn off all proximity switches 5 except for the proximity switch 5 corresponding to the target card slot. When the proximity switch 5 corresponding to the target card slot detects the positioning signal of the platform 00, the control system controls the platform 00 to stop moving and controls the telescopic component 3 to drive the pin shaft to engage with the card slot, thereby achieving precise positioning.

[0052] This utility model provides a fall protection device for a lifting platform. By hingedly connecting the telescopic component 3, which moves the first locking component 1 closer to or further away from the second locking component 2, a locking mechanism can be formed to prevent the platform 00 from falling. At the same time, it can also have a certain degree of freedom of movement, thereby reducing the impact of the force generated by the loading equipment entering and exiting the platform 00 on the first locking component 1 and the second locking component 2. This effectively reduces the risk of damage to the first locking component 1 and the second locking component 2 in the locked state, thereby extending the service life of the fall protection device and improving the safety of the lifting platform.

[0053] Example 2

[0054] A type of lifting platform, such as Figures 1-4 As shown, it includes a platform 00, a support column 01, a lifting mechanism, and a fall prevention device for a lifting platform as described in Embodiment 1.

[0055] For example, the platform 00 is a rectangular plate with four support columns 01, respectively located on two opposite sides of the platform 00. A lifting seat 02 is located near each support column 01, and each lifting seat 02 is equipped with a fall arrestor; however, not all of them need to be equipped as required. The support columns 01 are equipped with guide rails 7, and a limiting block 71 is located above the guide rails 7. A pulley system is located at the top of each support column 01 to prevent the platform 00 from colliding with the pulley system. The four support columns 01 are connected at their bottoms to form a frame. The lifting seats 02 of the platform 00 are equipped with a first guide wheel 72 and a second guide wheel 73. The first guide wheel 72 and the second guide wheel 73 are respectively located on both sides of the guide rail 7, and the axial directions of the first guide wheel 72 and the second guide wheel 73 are perpendicular to each other. Figures 3-4 As shown, there is one first guide wheel 72, with its roller surface moving along the support column 02. There are two second guide wheels 73, with their roller surfaces moving along the side of the guide rail 7. The height of the first guide wheel 72 is located between the two vertically arranged second guide wheels 73. The first guide wheel 72 and the second guide wheel 73 are used together for radial and lateral guiding and limiting, which can better maintain the stability and balance of the platform 00 during the lifting process. This is beneficial for the engagement of the first locking part 1 and the second locking part 2 of the fall arrestor, and further helps to extend the engagement reliability and service life of the fall arrestor. The number and position of the first guide wheel 72 and the second guide wheel 73 can be selected and changed according to actual needs.

[0056] In some alternative embodiments, the shape of the platform 00, the number of support columns 01, and the form of the lifting mechanism are not limited.

[0057] In some alternative embodiments, a proximity switch 5 may be provided at the corresponding position of the slot on one of the support columns 01.

[0058] This utility model provides a lifting platform that uses the aforementioned anti-fall device, which can effectively prevent the moving platform from falling and overcome the force generated by loading equipment entering and exiting the moving platform, making the lifting platform safer and more reliable.

[0059] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fall arrest device for an elevating platform, characterized by, The utility model relates to a kind of anti-falling device of lifting platform, including: First clamping piece (1), slidingly connected to platform (00); Second clamping piece (2) is arranged on support column (01), and the second clamping piece (2) is longitudinally spaced along the support column (01), and the second clamping piece (2) can be clamped with one end of the first clamping piece (1); Telescopic component (3) is hingedly connected to the other end of the first clamping piece (1), and the telescopic component (3) can drive the first clamping piece (1) to slide by telescoping.

2. The anti-falling device of the lifting platform according to claim 1, characterized in that, The first clamping piece (1) is a pin shaft, and the pin shaft is connected to the platform (00) by a shaft sleeve (11), and the second clamping piece (2) includes a clamping groove.

3. The anti-falling device of the lifting platform according to claim 2, characterized in that, The shaft sleeve (11) is located on the lifting seat (02) on the top surface of the platform (00), and the lifting seat (02) is used to connect the steel wire rope of the lifting mechanism.

4. The anti-falling device of the lifting platform according to claim 2, characterized in that, The telescopic component (3) is an electric push rod, and the electric push rod is hingedly connected to the pin shaft by a hinge shaft (4), and the axial direction of the hinge shaft (4) is parallel to the plane on which the platform (00) is located.

5. A fall arrest device for a lifting platform according to any one of claims 1 to 4, wherein, The support column (01) is also provided with a proximity switch (5), and the proximity switch (5) is arranged corresponding to the position of the second clamping piece (2) and the bottom of the support column (01).

6. The anti-falling device of the lifting platform according to claim 5, characterized in that, It also includes a control system, and the control system is connected to the proximity switch (5), the lifting mechanism and the telescopic component (3).

7. The anti-falling device of the lifting platform according to claim 6, characterized in that, It also includes a buffer device, and the buffer device is located below the platform (00).

8. The anti-falling device of the lifting platform according to claim 7, characterized in that, The buffer device includes a plurality of polyurethane buffers (6), and the polyurethane buffers (6) are arranged in a staggered manner with the lifting position of the platform (00).

9. A lift platform characterized by, It includes platform (00), support column (01), lifting mechanism and a kind of lifting platform of the anti-falling device of claim 1-8 any one described.

10. A lift platform as claimed in claim 9, wherein, The support column (01) is provided with a guide rail (7), and a limiting stopper (71) is arranged above the guide rail (7), and a first guide wheel (72) and a second guide wheel (73) are arranged on the platform (00), and the first guide wheel (72) and the second guide wheel (73) are arranged on the two sides of the guide rail (7) respectively, and the axial direction of the first guide wheel (72) and the axial direction of the second guide wheel (73) are perpendicular to each other.

Images