Telescopic lifting guardrail for scissor lift

Abstract

The utility model relates to the technical field of safety protection devices, in particular to a telescopic lifting guardrail for a shear fork type lifter, which comprises a lifting platform base, a lifting assembly, a lifting telescopic assembly and a telescopic electric cylinder, and the automatic telescopic function of the guardrail is realized through the cooperation of a plurality of groups of shear fork rods. Specifically, the lifting assembly is composed of a top telescopic cross rod, a fixed joint, a telescopic joint, an inward-inclined shear fork rod and an outward-inclined shear fork rod and is driven by a telescopic electric cylinder, and stable lifting, stretching and retracting of the guardrail are achieved. The purpose of improving the safety performance of the scissor lift is achieved, and the guardrail can flexibly achieve the functions of lifting in the vertical direction and stretching out and drawing back in the transverse direction.

Description

Technical Field

[0001] The present application relates to the technical field of safety protection devices, and in particular to a telescopic lifting guardrail for a scissor-type lift. Background Art

[0002] As a versatile lifting and loading and unloading mechanical device, lift platforms are widely used in various fields, including industry, commerce, and households. These devices primarily utilize power sources such as electricity, hydraulics, or pneumatics to vertically transport goods or personnel, significantly improving work efficiency and ease of use. However, as their scope of application continues to expand, higher requirements are placed on the safety and functionality of lift platforms.

[0003] In existing lifting platform designs, fixed guardrails are usually installed around the tabletop to ensure safe use. These guardrails can effectively prevent people or objects from accidentally falling and improve operational safety. Common guardrail forms include fixed guardrails, detachable guardrails, and manually adjustable guardrails. Although fixed guardrails have a simple structure and good stability, they cannot meet the needs of flexible adjustment in certain special application scenarios, such as work requirements at different heights. For example, the height of the guardrail can be adjusted up and down, but it cannot be extended or retracted along the length of the guardrail, which increases the overall volume of the guardrail and reduces the flexibility of actual use. At the same time, some extendable lifting platforms have also appeared on the market, that is, the tabletop of the lifting platform can be extended when in use to expand the area of ​​the lifting platform. The existing guardrails for elevators can no longer meet the ever-changing market demands. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, the present application provides a telescopic lifting guardrail for a scissors-type lift.

[0005] The present application provides a telescopic lifting guardrail for a scissor lift, which adopts the following technical solution:

[0006] A telescopic lifting guardrail for a scissor-type lift, comprising a lift platform base, a lifting assembly and a lifting and telescopic assembly being provided on the lift platform base, the lifting and telescopic assembly comprising two sliding bases symmetrically arranged at both ends of the lift platform base, the two sliding bases being slidably connected to the lift platform base via telescopic guide rails, a second fixed slide and an end hinged base being fixedly provided on the top of each of the two sliding bases, a slide groove being provided on the second fixed slide; the lifting assembly comprising a top telescopic cross bar, the top telescopic cross bar comprising a fixed section and a telescopic section, the telescopic section being at both ends of the fixed section There are two, and both telescopic joints are provided with a slide groove. The lifting and telescopic assembly includes a second inward-inclined scissors fork rod and a second outward-inclined scissors fork rod, the middle parts of the second inward-inclined scissors fork rod and the second outward-inclined scissors fork rod are hinged by a hinge shaft, and the second inward-inclined scissors fork rod and the second outward-inclined scissors fork rod are symmetrically arranged in two groups at both ends of the top telescopic cross bar, the bottom of the second inward-inclined scissors fork rod is hinged to the end hinged base, the top of the second inward-inclined scissors fork rod is slidably connected to the telescopic joint through a slide groove, and the bottom of the second outward-inclined scissors fork rod is slidably connected to the second fixed slide seat through a slide groove

[0007] By adopting the above technical solution, through the setting of the sliding base, the sliding base and the lifting platform base are slidingly connected through the guide rail, so that the sliding base can slide along the lifting platform base, and through the setting of the top telescopic cross bar, the top telescopic cross bar includes a fixed section and a telescopic section, and the telescopic section and the fixed section can slide relative to each other, so that the length of the top telescopic cross bar can move in coordination with the telescopic movement of the sliding base, and the second inward-inclined scissor fork rod and the second outward-inclined scissor fork rod can enable the lifting and telescopic assembly to realize the height adjustment function in the vertical direction, and in conjunction with the horizontal adjustment of the sliding base, the guardrail as a whole can achieve the technical effect of lifting and lowering in height and horizontal telescopic extension, which can meet the storage needs and the adjustment of the lifting platform.

[0008] In a specific feasible implementation scheme, two sliding grooves are symmetrically opened on the fixed section, and the lifting assembly also includes a telescopic electric cylinder, the output shaft of the telescopic electric cylinder is fixedly connected to the middle position of the two sliding grooves on the fixed section, and the bottom of the telescopic electric cylinder is fixedly set on the base of the lifting platform.

[0009] By adopting the above technical solution, the setting of the telescopic electric cylinder can push the fixed section to move up and down, and the fixed section can drive the second inward-inclined scissor fork rod and the second outward-inclined scissor fork rod to move up and down.

[0010] In a specific feasible implementation scheme, the lifting assembly also includes a first inward-inclined scissors fork rod and a first outward-inclined scissors fork rod, and the first inward-inclined scissors fork rod and the first outward-inclined scissors fork rod are symmetrically arranged in two identical groups with the telescopic electric cylinder as the midpoint, and the middle positions of the first inward-inclined scissors fork rod and the first outward-inclined scissors fork rod are hinged by a hinge shaft.

[0011] By adopting the above technical solution, two groups of first inward-inclined scissor fork rods and first outward-inclined scissor fork rods are provided, which can improve the overall stability of the guardrail. By setting the hinge axis, the first inward-inclined scissor fork rods and the first outward-inclined scissor fork rods perform scissor movements to achieve height adjustment in the vertical direction.

[0012] In a specific possible implementation manner, the top of the first inward-inclined scissors fork rod is slidably connected to the fixed joint via a sliding groove.

[0013] By adopting the above technical solution, the first inward-inclined scissor fork rod can slide along the sliding groove of the fixed section.

[0014] In a specific possible implementation scheme, fixed hinged bases are fixedly provided at both ends of the lifting platform base, and the bottom of the first inward-inclined scissor fork rod is hinged to the fixed hinged base.

[0015] By adopting the above technical solution and setting the fixed articulated base, the fixed articulated base can fix the first inward-inclined scissors fork rod and can also enable the first inward-inclined scissors fork rod to rotate relatively.

[0016] In a specific possible implementation scheme, the lifting assembly also includes a first fixed slide, two of which are symmetrically arranged with the telescopic electric cylinder as the center, and the bottom of the first outward-inclined scissors fork rod is slidably connected to the first fixed slide through a slide groove.

[0017] By adopting the above technical solution and arranging the first fixed slide and the first outward-inclined scissors fork rod, the first outward-inclined scissors fork rod can slide along the first fixed slide through the sliding groove.

[0018] In a specific embodiment, the top of the first outward-inclined scissors fork rod is slidably connected to the telescopic joint via a sliding groove.

[0019] By adopting the above technical solution, the top of the first outward-inclined scissors fork rod is slidably connected to the telescopic joint through the sliding groove, so that the first outward-inclined scissors fork rod can move as the telescopic joint extends and contracts.

[0020] In a specific possible implementation scheme, the lifting assembly also includes a connecting cross bar, both ends of which are provided with sliding grooves, and the hinge shafts of the two groups of the first outward-inclined scissors fork rods and the first inward-inclined scissors fork rods are slidably connected to the connecting cross bar through the sliding grooves.

[0021] By adopting the above technical solution and setting the connecting cross bar, the overall connection stability of the guardrail can be improved.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The lift platform base serves as the supporting structure for the entire system, with two sliding bases symmetrically positioned at either end. These sliding bases are slidably connected to the lift platform base via telescopic rails, enabling horizontal movement. The lifting assembly enables height adjustment of the guardrail. This assembly primarily comprises a top telescopic crossbar, consisting of a fixed section and two telescopic sections. The telescopic sections slide relative to the fixed section to accommodate the extension and retraction of the sliding base. Two chutes are located on the fixed section, allowing for vertical adjustment of the fixed section in conjunction with telescopic cylinders, thereby driving the entire lift system. The scissor fork design features a second inward-facing scissor fork and a second outward-facing scissor fork. These scissor forks are connected at their midpoints by a hinged shaft, enabling vertical height adjustment. The bottom of the second inward-facing scissor fork is connected to the hinged base at the end, while its top is slidably connected to the telescopic section via a chute. The bottom of the second outward-facing scissor fork is slidably connected to the second fixed slide via a chute. This design allows the guardrail to be adjusted in both height and horizontal directions, greatly improving its flexibility and convenience in use.

[0024] 2. Through the setting of the telescopic electric cylinder, the guardrail can be automatically raised and lowered by the telescopic electric cylinder, saving manpower. At the same time, the setting of the telescopic electric cylinder can also be convenient for use with electronic control. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the installation of guardrails and lifts;

[0026] Figure 2 This is a fully expanded state view of an embodiment of the present application;

[0027] Figure 3 This is a view of the embodiment of the present application in a fully retracted state;

[0028] Figure 4 It is a schematic diagram of the extended state of an embodiment of the present application.

[0029] Explanation of the accompanying drawings: 1. Lifting platform base; 31. Connecting cross bar; 32. First inward-inclined scissors fork rod; 33. First outward-inclined scissors fork rod; 341. Fixed section; 342. Telescopic section; 35. First fixed slide; 36. Fixed articulated base; 41. Second inward-inclined scissors fork rod; 42. Second outward-inclined scissors fork rod; 43. Sliding base; 44. Second fixed slide; 45. End articulated base; 5. Telescopic electric cylinder. DETAILED DESCRIPTION

[0030] The following is combined with Figures 1-4 This application is described in further detail.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0032] The present application discloses a telescopic lifting guardrail for a scissor-type lift, comprising a lift platform base 1, on which a lifting assembly and a lifting and telescoping assembly are provided. The lifting and telescoping assembly comprises two sliding bases 43 symmetrically arranged at both ends of the lift platform base 1. The two sliding bases 43 are slidably connected to the lift platform base 1 via telescopic guide rails, enabling the two sliding bases 43 to telescope along the ends of the lift platform base 1. A second fixed slide 44 and an end hinged base 45 are fixedly provided on the top of each of the two sliding bases 43, and a slide groove is provided on the second fixed slide 44. The lifting assembly includes a top telescopic crossbar, which includes a fixed section 341 and a telescopic section 342. Two telescopic sections 342 are provided at each end of the fixed section 341, each with a slot. The lifting and telescopic assembly also includes a second inward-facing scissor fork lever 41 and a second outward-facing scissor fork lever 42. The middle portions of the second inward-facing scissor fork lever 41 and the second outward-facing scissor fork lever 42 are hinged via a hinge axis, allowing them to rotate along the hinge axis. Two sets of the second inward-facing scissor fork lever 41 and the second outward-facing scissor fork lever 42 are symmetrically provided at each end of the top telescopic crossbar. The bottom of the second inward-inclined scissors fork rod 41 is hinged to the end hinged base 45, the top of the second inward-inclined scissors fork rod 41 is slidingly connected to the telescopic joint 342 through a slide groove, and the bottom of the second outward-inclined scissors fork rod 42 is slidingly connected to the second fixed slide 44 through a slide groove, so that the second inward-inclined scissors fork rod 41 and the second outward-inclined scissors fork rod 42 can slide along the slide groove. When the second inward-inclined scissors fork rod 41 and the second outward-inclined scissors fork rod 42 receive downward pressure, the setting of the slide groove can reduce the height of the second inward-inclined scissors fork rod 41 and the second outward-inclined scissors fork rod 42.

[0033] Two symmetrical slots are defined on the fixed section 341. The lifting assembly also includes a telescopic cylinder 5, which provides the driving force for raising and lowering the guardrail. The output shaft of the telescopic cylinder 5 is fixedly connected to the center of the two slots on the fixed section 341. The bottom of the telescopic cylinder 5 is fixedly mounted on the lifting platform base 1. The lifting assembly also includes a first inward-tilting scissor fork 32 and a first outward-tilting scissor fork 33. Two identical sets of the first inward-tilting scissor fork 32 and the first outward-tilting scissor fork 33 are symmetrically arranged around the telescopic cylinder 5. To enable relative rotation, the middle portions of the first inward-tilting scissor fork 32 and the first outward-tilting scissor fork 33 are hinged via a hinge axis. The top of the first inward-tilting scissor fork 32 is slidably connected to the fixed section 341 via a slot, allowing the first inward-tilting scissor fork 32 to slide along the slots on the fixed section 341 during raising and lowering, thereby achieving height extension and retraction. A fixed hinged base 36 is fixedly mounted at each end of the lift platform base 1. The bottom of the first inward-facing scissor fork 32 is hingedly connected to the fixed hinged base 36. The lift assembly also includes two first fixed slides 35, symmetrically arranged around the telescopic cylinder 5. The bottom of the first outward-facing scissor fork 33 is slidably connected to the first fixed slide 35 via a slide groove. The top of the first outward-facing scissor fork 33 is slidably connected to the telescopic joint 342 via a slide groove.

[0034] To improve the connection stability between the first outward-facing scissor fork 33 and the first inward-facing scissor fork 32, as well as the second inward-facing scissor fork 41 and the second outward-facing scissor fork 42, the lifting assembly further includes a connecting crossbar 31. Slide grooves are provided at both ends of the connecting crossbar 31. The hinge axes of the two sets of first outward-facing scissor fork 33 and the first inward-facing scissor fork 32 are slidably connected to the connecting crossbar 31 via the slide grooves. The connecting crossbar 31 is positioned transversely at the center of the first outward-facing scissor fork 33 and the first inward-facing scissor fork 32 and floats up and down as its height changes. The connecting crossbar 31 connects the two sets of first outward-facing scissor fork 33 and the first inward-facing scissor fork 32, increasing the connection stability and ensuring that the first outward-facing scissor fork 33 and the first inward-facing scissor fork 32 remain consistent during lifting or lowering.

[0035] The implementation principle of the embodiment of the present application is as follows: when the product is actually used, it is fixedly installed on the lifting platform of the elevator. When in use, the telescopic electric cylinder 5 drives the first outward-inclined scissor fork rod 33 and the first inward-inclined scissor fork rod 32, the second inward-inclined scissor fork rod 41 and the second outward-inclined scissor fork rod 42 to move up and down to adjust the height of the guardrail. If the length of the guardrail needs to be extended, the sliding base 43 can be pushed toward both ends, and then the telescopic sections 342 at both ends can be pushed in a direction away from the fixed section 341 to extend the top telescopic cross bar, thereby lengthening the overall length of the guardrail. After the lengthening, the guardrail can still be adjusted in height in the vertical direction through the slide groove. The above configuration enables the guardrail to achieve the technical effects of horizontal extension and vertical lifting, which is convenient for operators to use during actual work.

[0036] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A telescopic lifting guardrail for a scissor lift, characterized by: The invention comprises a lifting platform base (1), wherein the lifting platform base (1) is provided with a lifting assembly and a lifting telescopic assembly, wherein the lifting telescopic assembly comprises two sliding bases (43) symmetrically arranged at both ends of the lifting platform base (1), wherein the two sliding bases (43) are slidably connected to the lifting platform base (1) through telescopic guide rails, and the tops of the two sliding bases (43) are respectively fixed with a second fixed slide (44) and an end hinged base (45), and a slide groove is provided on the second fixed slide (44); the lifting assembly comprises a top telescopic cross bar, wherein the top telescopic cross bar comprises a fixed section (341) and a telescopic section (342), wherein the telescopic section (342) is provided with two at both ends of the fixed section (341), and two The telescopic joint (342) is provided with a slide groove, and the lifting telescopic assembly includes a second inward-inclined scissors fork rod (41) and a second outward-inclined scissors fork rod (42), the middle parts of the second inward-inclined scissors fork rod (41) and the second outward-inclined scissors fork rod (42) are hinged by a hinge shaft, and two groups of the second inward-inclined scissors fork rod (41) and the second outward-inclined scissors fork rod (42) are symmetrically arranged at both ends of the top telescopic cross bar, the bottom of the second inward-inclined scissors fork rod (41) is hinged to the end hinged base (45), the top of the second inward-inclined scissors fork rod (41) is slidably connected to the telescopic joint (342) through the slide groove, and the bottom of the second outward-inclined scissors fork rod (42) is slidably connected to the second fixed slide (44) through the slide groove.

2. The telescopic lifting guardrail for a scissor lift according to claim 1, characterized in that: Two chute grooves are symmetrically provided on the fixed joint (341), and the lifting assembly further comprises a telescopic electric cylinder (5). The output shaft of the telescopic electric cylinder (5) is fixedly connected to the middle position of the two chute grooves on the fixed joint (341), and the bottom of the telescopic electric cylinder (5) is fixedly arranged on the lifting platform base (1).

3. The telescopic lifting guardrail for a scissor lift according to claim 2, characterized in that: The lifting assembly further comprises a first inward-inclined scissor fork rod (32) and a first outward-inclined scissor fork rod (33), wherein two identical groups of the first inward-inclined scissor fork rod (32) and the first outward-inclined scissor fork rod (33) are symmetrically arranged with the telescopic electric cylinder (5) as the midpoint, and the middle positions of the first inward-inclined scissor fork rod (32) and the first outward-inclined scissor fork rod (33) are hinged via a hinge shaft.

4. The telescopic lifting guardrail for a scissor lift according to claim 3, characterized in that: The top of the first inward-inclined scissor fork rod (32) is slidably connected to the fixed joint (341) via a sliding groove.

5. The telescopic lifting guardrail for a scissor lift according to claim 3, characterized in that: A fixed hinged base (36) is fixedly provided at each end of the lifting platform base (1), and the bottom of the first inward-inclined scissor fork rod (32) is hinged to the fixed hinged base (36).

6. The telescopic lifting guardrail for a scissor lift according to claim 3, characterized in that: The lifting assembly further comprises a first fixed slide (35), two of which are symmetrically arranged with the telescopic electric cylinder (5) as the center, and the bottom of the first outward-inclined scissor fork rod (33) is slidably connected to the first fixed slide (35) via a slide groove.

7. The telescopic lifting guardrail for a scissor lift according to claim 3, characterized in that: The top of the first outward-inclined scissor fork rod (33) is slidably connected to the telescopic joint (342) via a sliding groove.

8. The telescopic lifting guardrail for a scissor lift according to claim 3, characterized in that: The lifting assembly further comprises a connecting crossbar (31), both ends of which are provided with sliding grooves, and the hinge shafts of the two groups of the first outward-inclined scissor fork rods (33) and the first inward-inclined scissor fork rods (32) are slidably connected to the connecting crossbar (31) through the sliding grooves.

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