Scissor forklift platform guardrail limiting device

Abstract

The utility model discloses a scissor forklift platform guardrail limiting device which comprises a protection limiting assembly, the protection limiting assembly comprises an extending guardrail and a splicing guardrail, and the extending guardrail and the splicing guardrail are rotationally connected through a hinge; a handle is fixedly connected to the surface of the extension guardrail, positioning grooves and limiting holes are formed in the upper surfaces of the extension guardrail and the splicing guardrail, a positioning clamping plate is rotationally connected to the upper portion of the splicing guardrail, and one end of the positioning clamping plate slides on the surface of the positioning groove; rotating shafts are rotatably connected to the interiors of the upper sides of the extension guardrails and the splicing guardrails, and protective rods are fixedly connected to the surfaces of the rotating shafts; magnetic suction sliding grooves are formed in the lower surfaces of the extension guardrails and the splicing guardrails; the splicing guardrails and the extension guardrails are inserted into the upper guardrail and the lower guardrail, contraction of the extension guardrails and the splicing guardrails is completed, and the defect that in the prior art, due to the fact that the two sets of guardrails are placed front and back, the available space of the shear forklift work platform is reduced is overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field related to engineering machinery, and in particular relates to a scissor lift platform guardrail limiting device. Background Art

[0002] A scissor lift truck is a type of handling vehicle widely used in logistics, warehousing, manufacturing and other fields. It has the characteristics of high efficiency and flexibility. Its main function is to carry out cargo loading and unloading, transshipment and other tasks in various venues. The design of a scissor lift truck usually includes one or more scissor-shaped arms, a traveling mechanism and a control system.

[0003] The existing scissor lift platform has a large operating area, so a main platform and a secondary platform are used. The two platforms are extended and expanded in the form of sliding. When the two platforms slide to the required position, the guardrails of the two platforms need to be limited to prevent further sliding;

[0004] Therefore, the patent with the authorization announcement number CN208454455U discloses a scissor lift platform guardrail limit device, including a handle pivotally connected to the first guardrail, a limit slot provided on the second guardrail, a limit rod for being inserted into the limit slot provided on the handle, and a spring connected between the handle and the first guardrail. The utility model has a practical structure that enables the limit rod on the first guardrail to automatically insert into the upper limit slot of the second guardrail, simplifies the operation process of extending the platform, and improves the operation efficiency of the extended platform; the extension length of the platform is no longer limited to a fixed length, but an arbitrary length within the limit length range, which improves the practicality of the scissor lift and has the potential for promotion and use.

[0005] Although the above patent achieves the effect of freely extending the guardrail, arranging the two sets of guardrails one in front of the other will reduce the working area of ​​the scissor lift platform, which is not conducive to space utilization; at the same time, the guardrail in the patent does not have a bending and folding effect, and the protection area of ​​the guardrail cannot be changed according to the usage scenario, and its practicality is low; therefore, the utility model proposes a scissor lift platform guardrail limiting device. Utility Model Content

[0006] The utility model aims to provide a scissor lift platform guardrail limiting device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a scissor lift platform guardrail limiting device, comprising an upper guardrail and a lower guardrail, the upper guardrail and the lower guardrail are fixedly connected by a fixed connecting rod, and a protective limiting component for increasing the protective range of the guardrail is arranged inside the upper guardrail and the lower guardrail, and the protective limiting component comprises an extended guardrail and a spliced ​​guardrail, and the extended guardrail and the spliced ​​guardrail are rotatably connected by a hinge; a handle is fixedly connected to the surface of the extended guardrail, and a positioning groove and a limiting hole are provided on the upper surfaces of the extended guardrail and the spliced ​​guardrail, and a positioning card plate is rotatably connected to the top of the spliced ​​guardrail, and one end of the positioning card plate slides on the surface of the positioning groove; a rotating shaft is rotatably connected to the upper inner side of the extended guardrail and the spliced ​​guardrail, and a guard rod is fixedly connected to the surface of the rotating shaft; a magnetic suction groove is provided on the lower surface of the extended guardrail and the spliced ​​guardrail.

[0008] Preferably, the surface of the upper guardrail is fixedly connected with an arc plate and a slide seat; the surface of the arc plate is rotatably connected with a paddle plate, one side of the paddle plate is fixedly connected with a limiting block, and the other side of the paddle plate is fixedly connected with a paddle; the surface of the paddle is fixedly connected with a return spring, and the other end of the return spring is fixed to the surface of the upper guardrail.

[0009] Preferably, a through hole is opened on the surface of the upper guardrail, the limit block moves on the surface of the through hole, and the limit block moves on the inner surface of the limit hole; and a latch is slidably connected inside the sliding seat.

[0010] Preferably, a universal wheel is provided below the extended guardrail; a mounting piece is fixedly connected below the lower guardrail, and the mounting piece is fixed to the surface of the scissor lift platform.

[0011] Preferably, the hinge is fixed to the surface of the extended guardrail and the spliced ​​guardrail by screws.

[0012] Preferably, the positioning card plate is a flexible steel plate, which can withstand bending deformation and has automatic recovery capability; a magnetic sheet is provided at the bottom of the protective rod.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model inserts the spliced ​​guardrail and the extended guardrail into the upper guardrail and the lower guardrail to complete the contraction of the extended guardrail and the spliced ​​guardrail, thereby avoiding the disadvantage of reducing the available space of the scissor lift operation platform by placing two sets of guardrails in front and behind in the prior art. At the same time, the spliced ​​guardrail and the extended guardrail inside the upper guardrail and the lower guardrail can avoid dust absorption and rain corrosion when not in use, thereby increasing their service life;

[0015] 2. The utility model pushes the positioning card plate on the surface of the spliced ​​guardrail after it is pulled out upwards. At this time, the positioning card plate is in a bent state. A snap-in block is provided at the lower side of the positioning card plate. At this time, the snap-in block is disengaged from the positioning groove. The extended guardrail can be rotated 180 degrees under the auxiliary limit of the hinge. After adjusting the position, the snap-in block in the positioning card plate is snapped onto the surface of the appropriate positioning groove, that is, the extended guardrail is limited again, thereby achieving an adjustable effect of the guardrail protection area and improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of a scissor lift platform guardrail limit device;

[0017] Figure 2 It is a schematic diagram of the internal structure of the upper guardrail and the lower guardrail;

[0018] Figure 3 It is a schematic diagram of the internal structure of the extended guardrail and the spliced ​​guardrail;

[0019] Figure 4 This is a schematic diagram of the working state of the protection rod;

[0020] Figure 5 It is a schematic diagram of the position relationship between the limit block and the latch;

[0021] In the figure: 1. upper guardrail; 2. lower guardrail; 3. fixed connecting rod; 4. mounting part; 5. extension guardrail; 51. spliced ​​guardrail; 6. handle; 7. positioning groove; 8. limiting hole; 9. positioning card plate; 10. hinge; 11. screw; 12. rotating shaft; 13. guardrail; 14. magnetic slide groove; 15. arc plate; 16. paddle plate; 17. limiting block; 18. paddle; 19. reset spring; 20. slide seat; 21. latch; 22. universal wheel. DETAILED DESCRIPTION

[0022] In the prior art, the two sets of guardrails are arranged one in front of the other, which will reduce the operating area of ​​the scissor lift platform and is not conducive to the use of space; at the same time, the existing guardrails do not have a bending and folding effect, and the protection area of ​​the guardrails cannot be changed according to the usage scenario, which has low practicality;

[0023] Therefore, the utility model proposes a scissor lift platform guardrail limiting device, such as Figure 1 As shown, it includes an upper guardrail 1 and a lower guardrail 2, and the upper guardrail 1 and the lower guardrail 2 are fixedly connected by a fixed connecting rod 3; the upper guardrail 1 and the lower guardrail 2 are provided with a protective limit assembly for increasing the protective range of the guardrail, such as Figure 2As shown, the protective limiting assembly includes an extended guardrail 5 and a spliced ​​guardrail 51, and the extended guardrail 5 and the spliced ​​guardrail 51 are rotatably connected by a hinge 10; a handle 6 is fixedly connected to the surface of the extended guardrail 5, and a positioning groove 7 and a limiting hole 8 are provided on the upper surfaces of the extended guardrail 5 and the spliced ​​guardrail 51. A positioning card plate 9 is rotatably connected to the upper side of the spliced ​​guardrail 51, and one end of the positioning card plate 9 slides on the surface of the positioning groove 7; Figure 3 As shown, a rotating shaft 12 is rotatably connected to the upper inner side of the extended guardrail 5 and the spliced ​​guardrail 51, and a protective rod 13 is fixedly connected to the surface of the rotating shaft 12; a magnetic sliding groove 14 is provided on the lower surface of the extended guardrail 5 and the spliced ​​guardrail 51.

[0024] Further, such as Figure 5 As shown, the surface of the upper guardrail 1 is fixedly connected with an arc plate 15 and a slide seat 20; the surface of the arc plate 15 is rotatably connected with a paddle 16, one side of the paddle 16 is fixedly connected with a limiting block 17, and the other side of the paddle 16 is fixedly connected with a paddle 18; the surface of the paddle 18 is fixedly connected with a return spring 19, and the other end of the return spring 19 is fixed to the surface of the upper guardrail 1.

[0025] Furthermore, a through hole is opened on the surface of the upper guardrail 1, and the limit block 17 moves on the surface of the through hole, and the limit block 17 moves on the inner surface of the limit hole 8; the interior of the slide seat 20 is slidably connected with a latch 21.

[0026] Furthermore, a universal wheel 22 is provided below the extended guardrail 5 ; a mounting member 4 is fixedly connected below the lower guardrail 2 , and the mounting member 4 is fixed to the surface of the scissor lift platform.

[0027] Furthermore, the hinge 10 is fixed to the surfaces of the extension guardrail 5 and the splicing guardrail 51 by means of screws 11 .

[0028] Furthermore, the positioning card plate 9 is a flexible steel plate, which can withstand bending deformation and has automatic recovery capability; a magnetic sheet is provided at the bottom of the protective rod 13 .

[0029] The working principle and use process of the utility model are as follows: the upper guardrail 1 and the lower guardrail 2 are fixedly connected by a fixed connecting rod 3, and then the mounting member 4 is fixedly installed under the lower guardrail 2, and the mounting member 4 is installed on the surface of the scissor lift operation platform;

[0030] The spliced ​​guardrail 51 is rotatably connected to the extended guardrail 5 by the hinge 10, and the positioning groove 7 on the surface of the extended guardrail 5 is limited by the positioning card plate 9 on the surface of the spliced ​​guardrail 51, so that the extended guardrail 5 and the spliced ​​guardrail 51 are in a fixed or static state, and the spliced ​​guardrail 51 and the extended guardrail 5 are inserted into the upper guardrail 1 and the lower guardrail 2 to complete the contraction of the extended guardrail 5 and the spliced ​​guardrail 51, thereby avoiding the disadvantage of the prior art that the two sets of guardrails are placed front and back, resulting in a reduction in the available space of the scissor lift working platform. At the same time, the spliced ​​guardrail 51 and the extended guardrail 5 inside the upper guardrail 1 and the lower guardrail 2 can avoid dust absorption and rain corrosion when not in use, thereby increasing their service life.

[0031] When the protection range needs to be increased, the extended guardrail 5 and the spliced ​​guardrail 51 can be pulled out from the upper guardrail 1 and the lower guardrail 2 by hand-pulling the handle 6. Before pulling out, the extended guardrail 5 is limited by the limit block 17 and cannot move. At this time, it is necessary to first press the paddle 18 in the direction of the upper guardrail 1 to disengage the limit block 17 from the surface of the limit hole 8, and then press and slide the latch 21 in the direction of the limit block 17 to limit the limit block 17 on the surface of the upper guardrail 1. At this time, the extended guardrail 5 and the spliced ​​guardrail 51 can be freely extended and retracted, and the extended guardrail 5 can be pulled out to increase the protection range.

[0032] After being pulled out to a suitable position, the latch 21 is pushed in the opposite direction to reset, and the limit block 17 is reset under the action of the reset spring 19; the extended guardrail 5 or the spliced ​​guardrail 51 is limited again to improve the protection stability;

[0033] In this process, if Figure 4 As shown, after the extended guardrail 5 is pulled out, the protective rod 13 is no longer limited by the upper guardrail 1, and swings downward around the rotating shaft 12 under its own gravity. When its bottom end swings to the surface of the magnetic suction groove 14, the magnetic sheet at its bottom end and the magnetic suction groove 14 attract each other, thereby vertically stabilizing the protective rod 13 on the surface of the extended guardrail 5, thereby improving the protection effect.

[0034] If the protected area needs to be adjusted, the positioning card plate 9 on the surface of the pulled-out spliced ​​guardrail 51 will be pushed upward. At this time, the positioning card plate 9 is in a bent state, and a snap-in block is provided at the lower side of the positioning card plate 9. At this time, the snap-in block is disengaged from the positioning groove 7, and the extended guardrail 5 can be rotated 180 degrees under the auxiliary limit of the hinge 10. After adjusting the position, the snap-in block in the positioning card plate 9 is snapped onto the surface of the appropriate positioning groove 7, that is, the extended guardrail 5 is limited again, thereby realizing the adjustable effect of the guardrail protection area and improving practicality.

[0035] When the operation is completed, it is necessary to pull up the positioning card plate 9, set the extended guardrail 5 and the spliced ​​guardrail 51 horizontally again, and then release the positioning card plate 9 to limit the extended guardrail 5; press the paddle 18 again, push the latch 21 to the bottom of the limit block 17 to limit it, and then the extended guardrail 5 and the spliced ​​guardrail 51 can be pushed into the interior of the upper guardrail 1 and the lower guardrail 2; by resetting the latch 21, the limit block 17 will limit the folded extended guardrail 5 and the spliced ​​guardrail 51 again under the action of the reset spring 19, and protect the extended guardrail 5 and the spliced ​​guardrail 51 again.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A scissor lift platform guardrail limiting device, comprising an upper guardrail (1) and a lower guardrail (2), wherein the upper guardrail (1) and the lower guardrail (2) are fixedly connected via a fixed connecting rod (3), characterized in that: A protective limit assembly for increasing the protective range of the guardrail is arranged inside the upper guardrail (1) and the lower guardrail (2), and the protective limit assembly comprises an extended guardrail (5) and a spliced ​​guardrail (51), wherein the extended guardrail (5) and the spliced ​​guardrail (51) are rotatably connected via a hinge (10); a handle (6) is fixedly connected to the surface of the extended guardrail (5), a positioning groove (7) and a limit hole (8) are provided on the upper surfaces of the extended guardrail (5) and the spliced ​​guardrail (51), a positioning card plate (9) is rotatably connected to the top of the spliced ​​guardrail (51), and one end of the positioning card plate (9) slides on the surface of the positioning groove (7); a rotating shaft (12) is rotatably connected to the upper interior of the extended guardrail (5) and the spliced ​​guardrail (51), and a protective rod (13) is fixedly connected to the surface of the rotating shaft (12); and a magnetic sliding groove (14) is provided on the lower surfaces of the extended guardrail (5) and the spliced ​​guardrail (51).

2. A scissor lift platform guardrail limiting device according to claim 1, characterized in that: The surface of the upper guardrail (1) is fixedly connected with an arc plate (15) and a slide seat (20); the surface of the arc plate (15) is rotatably connected with a shift plate (16), one side of the shift plate (16) is fixedly connected with a limit block (17), and the other side of the shift plate (16) is fixedly connected with a shift piece (18); the surface of the shift piece (18) is fixedly connected with a return spring (19), and the other end of the return spring (19) is fixed to the surface of the upper guardrail (1).

3. A scissor lift platform guardrail limiting device according to claim 2, characterized in that: A through hole is formed on the surface of the upper guardrail (1); the limit block (17) moves on the surface of the through hole; the limit block (17) moves on the inner surface of the limit hole (8); and a latch (21) is slidably connected inside the slide seat (20).

4. A scissor lift platform guardrail limiting device according to claim 3, characterized in that: A universal wheel (22) is provided below the extended guardrail (5); a mounting member (4) is fixedly connected below the lower guardrail (2), and the mounting member (4) is fixed to the surface of the scissor lift platform.

5. A scissor lift platform guardrail limiting device according to claim 4, characterized in that: The hinge (10) is fixed to the surfaces of the extension guardrail (5) and the spliced ​​guardrail (51) by means of screws (11).

6. A scissor lift platform guardrail limiting device according to claim 5, characterized in that: The positioning card plate (9) is a flexible steel plate, capable of withstanding bending deformation and having automatic recovery capability; a magnetic sheet is provided at the bottom of the protection rod (13).

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