Anti-falling test device for elevating platform

Abstract

The utility model discloses a kind of anti-falling test equipment for lifting platform, comprising: bottom plate, only can be set on the bottom plate and be slid in front-back direction slide bar, slide bar extends along front-back direction, rack is set on the front side of slide bar;Gear is set on the bottom plate, the rotation axis of gear extends along left-right direction and can be connected with transmission shaft;Rack and gear can be in first state and second state;When being in first state, rack and gear are engaged;When being in second state, rack and gear are released;During the sliding process of slide bar, rack and gear can be switched between first state and second state.The anti-falling test equipment can test whether anti-falling device can normally play a role.

Description

Technical Field

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

[0002] A scissor lift, also known as a scissor-lift platform, is a type of lifting and loading equipment widely used in industrial and commercial fields. Its core structure is the scissor fork (scissor boom), which raises and lowers the platform through the crisscrossing extension and retraction of multiple sets of forks. During operation, a belt typically provides power to extend and retract the forks. As the forks extend, the platform rises; as they retract, the platform lowers. This type of lift has many advantages, such as a compact structure, occupying little space when retracted, facilitating storage and transportation; strong load-bearing capacity, capable of smoothly lifting heavy goods or personnel; and stable lifting process, as the scissor fork structure keeps the platform level during lifting, ensuring operational safety. However, it is understandable that if the scissor forks malfunction, the platform could easily fall, causing goods to roll off and personnel to be injured.

[0003] To prevent the lifting platform from falling, a fall protection device (fall protection cylinder) is usually installed on it. Understandably, this fall protection device needs to be tested during the production process of the lifting platform. Utility Model Content

[0004] In view of this, the main objective of this utility model is to provide a fall protection testing device for a lifting platform.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows: a fall protection testing device for a lifting platform, the lifting platform comprising: a base, a platform disposed on the base, and a scissor fork disposed between the platform and the base; a driving device and a transmission shaft, the driving device being capable of driving the transmission shaft to rotate; when the transmission shaft rotates along a first direction, the driving device drives the platform to move upward; when the platform moves downward, it is capable of driving the transmission shaft to rotate along a second direction; when the transmission shaft is jammed and cannot rotate, the platform cannot move downward; the first and second directions are opposite; the fall protection test... The device includes: a base plate, on which a slide bar capable of sliding only in the forward and backward direction is provided, the slide bar extending in the forward and backward direction, and a first rack provided on the front side of the slide bar; a first gear provided on the base plate, the rotation axis of the first gear extending in the left and right direction and capable of being connected to the transmission shaft; the first rack and the first gear can be in a first state and a second state; when in the first state, the first rack and the first gear are engaged; when in the second state, the first rack and the first gear are disengaged; during the sliding of the slide bar, the first rack and the first gear can switch between the first state and the second state.

[0006] As an improvement of this utility model embodiment, a groove extending in the front-back direction is provided on the base plate, and the slide bar is slidably disposed in the groove.

[0007] As an improvement of this utility model embodiment, the left and right sides of the slider respectively abut against the inner side of the groove.

[0008] As an improvement of this utility model embodiment, a baffle is provided above the groove, the baffle is fixedly connected to the bottom plate, and the slide bar abuts against the lower surface of the baffle.

[0009] As an improvement of this utility model embodiment, in the front-back direction, the length of the first rack is less than the length of the slide bar.

[0010] As an improvement of this utility model embodiment, the groove is capable of moving in the left and right directions relative to the base plate.

[0011] As an improvement of this utility model embodiment, two parallel and symmetrically arranged slide rails are provided on the base plate, and the slide rails extend in the left and right direction; sliders are provided at both the front and rear ends of the groove, and the sliders at the front and rear ends can slide along the front and rear slide rails respectively.

[0012] As an improvement of this utility model embodiment, the right side of the rotating shaft is provided with a recess for accommodating the transmission shaft.

[0013] As an improvement of this utility model embodiment, a second rack is provided on the rear side of the slide bar, and a second gear is provided on the base plate; when the slide bar slides in the back-and-forth direction, the second rack and the second gear are always meshed; a motor is provided on the base plate, the stator of the motor is fixedly connected to the base plate, and the rotor drives the second gear to rotate.

[0014] As an improvement to this embodiment of the present invention, the first and second racks are not connected.

[0015] The fall protection testing device for a lifting platform provided in this embodiment of the present invention has the following advantages: This embodiment of the present invention discloses a fall protection testing device for a lifting platform, comprising: a base plate, on which a slide bar capable of sliding only in the forward and backward direction is provided, the slide bar extending in the forward and backward direction, and a rack provided on the front side of the slide bar; a gear provided on the base plate, the rotation axis of the gear extending in the left and right direction and capable of connecting to a transmission shaft; the rack and gear can be in a first state and a second state; when in the first state, the rack and gear are engaged; when in the second state, the rack and gear are disengaged; during the sliding of the slide bar, the rack and gear can switch between the first state and the second state. This fall protection testing device can test whether the fall protection device can function properly. Attached Figure Description

[0016] Figure 1 A schematic diagram of the fall protection testing equipment provided in the embodiment; Figure 2 for Figure 1 A magnified view of region A in the middle; Figure 3 The provided embodiment includes a structural diagram of a lifting platform and a fall protection testing device. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0018] The following description and accompanying drawings fully illustrate specific embodiments described herein to enable those skilled in the art to practice them. Some embodiments may include or substitute parts and features of other embodiments. The scope of the embodiments herein encompasses the entire scope of the claims and all available equivalents thereof. Throughout this document, the terms “first,” “second,” etc., are used only to distinguish one element from another without requiring or implying any actual relationship or order between the elements. Indeed, a first element can also be referred to as a second element, and vice versa. Furthermore, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a structure, apparatus, or device. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the structure, apparatus, or device that includes said element. The various embodiments described herein are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments; similar or identical parts between embodiments can be referred to interchangeably.

[0019] The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used in this document to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing the document and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description herein, unless otherwise specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two elements; they can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0020] This utility model embodiment provides a fall protection testing device for a lifting platform. The lifting platform includes: a base 1, a platform 2 disposed on the base 1, and a scissor fork 3 disposed between the platform 2 and the base 1; a driving device and a transmission shaft 4. The driving device can drive the transmission shaft 4 to rotate. When the transmission shaft 4 rotates along a first direction, the driving device drives the platform 2 to move upward. When the platform 2 moves downward, it can drive the transmission shaft 4 to rotate along a second direction. When the transmission shaft 4 is jammed and cannot rotate, the platform 2 cannot move downward. The first and second directions are opposite. Here, as shown... Figure 3As shown, the drive device includes a motor, the rotor of which can be connected to the right end 41 of the drive shaft 4. When the rotor rotates, it drives the drive shaft 4 to rotate. Figure 1 , Figure 2 and Figure 3 As shown, the fall protection testing device 5 includes: The base plate 51 is provided with a slide bar 53 that can only slide in the front and back direction. The slide bar 53 extends in the front and back direction, and a first rack 54 is provided on the front side of the slide bar 53. A first gear 55 is provided on the base plate 51. The rotation shaft 551 of the first gear 55 extends in the left and right direction and can be connected to the transmission shaft 4. The first rack 54 and the first gear 55 can be in a first state and a second state; when in the first state, the first rack 54 and the first gear 55 are engaged; when in the second state, the first rack 54 and the first gear 55 are disengaged. During the sliding process of the slider 53, the first rack 54 and the first gear 55 can switch between a first state and a second state.

[0021] In use, the rotor of the motor in the drive device is connected to the right end 41 of the transmission shaft 4. When the drive device is started, it drives the transmission shaft 4 to rotate in the first direction. At this time, the platform 2 moves upward and reaches the test height. Then, the rotating shaft 551 of the first gear 55 is connected to the transmission shaft 4, and the slider 53 is engaged with the first gear 55 (i.e., in the first state). After that, the rotor of the motor is separated from the transmission shaft 4, and the slider 53 is pulled to move in the left and right directions. It can be understood that the first rack 54 and the first gear 55 are eventually released (i.e., in the second state). Then, the platform 2 will move downward, and the fall protection device can be tested to see if it can function properly.

[0022] In this embodiment, a groove 52 extending in the front-back direction is provided on the base plate 51, and the slide bar 53 is slidably disposed in the groove 52.

[0023] In this embodiment, the left and right sides of the slider 53 abut against the inner side of the groove 52. This allows the slider 53 to slide only along the groove 52 in the back-and-forth direction.

[0024] In this embodiment, a baffle 521 is provided above the groove 52, and the baffle 521 is fixedly connected to the base plate 51. The slide bar 53 abuts against the lower surface of the baffle 521. Here, the baffle 521 can prevent the slide bar 53 from moving in the up and down direction.

[0025] In this embodiment, the length of the first rack 54 is less than the length of the slide bar 53 in the front-back direction.

[0026] In this embodiment, the groove 52 is capable of moving left and right relative to the base plate 51. For example... Figure 1 As shown, two parallel and symmetrically arranged slide rails 511 are provided on the base plate 51, extending in the left-right direction; sliders are provided at both ends of the groove 52, and the two sliders can slide along the corresponding slide rails 511 respectively. In use, the rotating shaft 551 can be aligned with the drive shaft 4, and then the groove 52 can be moved toward the drive shaft 4. Finally, the rotating shaft 551 contacts the drive shaft 4 and is then fixed.

[0027] In this embodiment, two parallel and symmetrically arranged slide rails 511 are provided on the base plate 51, and the slide rails 511 extend in the left and right direction; both the front and rear ends of the groove 52 are provided with sliders, and the sliders at the front and rear ends can slide along the front and rear slide rails 511 respectively.

[0028] In this embodiment, the right side of the rotating shaft 551 is provided with a recess 5511 for accommodating the transmission shaft 4. Here, the transmission shaft 4 is generally cylindrical, and the recess 5511 is also cylindrical, so that it can match the transmission shaft 4; a protrusion can be provided on the outer side of the transmission shaft 4, and a space can be provided on the inner side of the recess 5511 to accommodate the protrusion, so that the connection between the rotating shaft 551 and the transmission shaft 4 is more secure.

[0029] In this embodiment, a second rack 56 is provided on the rear side of the slide bar 53, and a second gear 57 is provided on the base plate 51. When the slide bar 53 slides in the back-and-forth direction, the second rack 56 and the second gear 57 are always meshed. A motor 58 is provided on the base plate 51, the stator of the motor 58 is fixedly connected to the base plate 51, and the rotor drives the second gear 57 to rotate. Here, when the rotor of the motor 58 rotates, it can drive the slide bar 53 to move in the back-and-forth direction.

[0030] In this embodiment, the first and second racks are not connected.

[0031] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0032] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A fall protection testing device for a lifting platform, the lifting platform comprising: A base (1), a platform (2) disposed on the base (1), and a scissor fork (3) disposed between the platform (2) and the base (1); a drive device and a transmission shaft (4), wherein the drive device is capable of driving the transmission shaft (4) to rotate; when the transmission shaft (4) rotates along a first direction, the drive device drives the platform (2) to move upward; when the platform (2) moves downward, it is capable of driving the transmission shaft (4) to rotate along a second direction; when the transmission shaft (4) is stuck and cannot rotate, the platform (2) cannot move downward. The first and second directions are opposite; characterized in that the fall protection testing equipment (5) includes: The base plate (51) is provided with a slide bar (53) that can only slide in the front and back direction. The slide bar (53) extends in the front and back direction, and a first rack (54) is provided on the front side of the slide bar (53). A first gear (55) is provided on the base plate (51), and the rotation shaft (551) of the first gear (55) extends in the left and right direction and can be connected to the transmission shaft (4). The first rack (54) and the first gear (55) can be in a first state and a second state; when in the first state, the first rack (54) and the first gear (55) are engaged; when in the second state, the first rack (54) and the first gear (55) are disengaged. During the sliding process of the slider (53), the first rack (54) can switch between a first state and a second state with the first gear (55).

2. The fall protection testing equipment according to claim 1, characterized in that: A groove (52) extending in the front-to-back direction is provided on the base plate (51), and the slide bar (53) is slidably disposed in the groove (52).

3. The fall protection testing equipment according to claim 2, characterized in that: The left and right sides of the slider (53) abut against the inner side of the groove (52).

4. The fall protection testing equipment according to claim 2, characterized in that: A baffle (521) is provided above the groove (52), the baffle (521) is fixedly connected to the bottom plate (51), and the slide bar (53) abuts against the lower surface of the baffle (521).

5. The fall protection testing equipment according to claim 1, characterized in that: In the front-to-back direction, the length of the first rack (54) is less than the length of the slide bar (53).

6. The fall protection testing device according to claim 2, characterized in that: The groove (52) is capable of moving in the left and right directions relative to the base plate (51).

7. The fall protection testing device according to claim 6, characterized in that: Two parallel and symmetrical slide rails (511) are provided on the base plate (51), and the slide rails (511) extend in the left and right direction; The groove (52) is provided with sliders at both the front and rear ends, and the sliders at the front and rear ends can slide along the front and rear slide rails (511) respectively.

8. The fall protection testing device according to claim 6, characterized in that: The right side of the rotating shaft (551) is provided with a recess (5511) for accommodating the transmission shaft (4).

9. The fall protection testing device according to claim 6, characterized in that: A second rack (56) is provided on the rear side of the slide bar (53), and a second gear (57) is provided on the base plate (51); when the slide bar (53) slides in the forward and backward direction, the second rack (56) and the second gear (57) are always meshed; A motor (58) is provided on the base plate (51). The stator of the motor (58) is fixedly connected to the base plate (51), and the rotor drives the second gear (57) to rotate.

10. The fall protection testing device according to claim 9, characterized in that: The first and second racks are not connected.

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