Anti-gliding device for lifting platform

Abstract

The utility model discloses an anti-gliding device for a lifting platform, and relates to the technical field of lifting platform protection. The anti-sliding device comprises a base, an X-shaped supporting frame, an upper platform and a hydraulic cylinder matched with the X-shaped supporting frame, a rotating shaft is transversely arranged on the base, a sliding block is arranged on the rotating shaft in a sliding mode, a first driving assembly used for driving the rotating shaft to rotate is arranged on the sliding block, and a connecting plate is longitudinally arranged on the base and located on the inner side of the rotating shaft in a sliding mode. Second driving assemblies used for driving the connecting plates to slide are arranged at the two ends of the rotating shaft correspondingly, and a plurality of limiting assemblies matched with the sliding blocks are arranged on the connecting plates correspondingly. In the initial state, the limiting assembly is matched with the sliding block, when the X-shaped supporting frame ascends to the highest limit, the rotating shaft rotates reversely to push the connecting plate to slide inwards, the limiting assembly and the sliding block are not matched, the top of the X-shaped supporting frame can descend, whether the limiting assembly works or not is controlled through ascending and descending of the X-shaped supporting frame, operation is easy and convenient, and time and labor are saved; the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting platform protection, in particular to a lifting platform anti-slip device. Background Art

[0002] A lift is a multifunctional lifting device that can be categorized as fixed or mobile, rail-mounted, articulated, scissor-type, chain-mounted, and platform-mounted. A scissor lift is a versatile piece of specialized equipment for aerial work. Its scissor-type mechanical structure provides high stability, a wide working platform, and a high load capacity. A scissor lift is a vertical lift designed for aerial work with a wide range of applications, both indoors and outdoors. It can be widely used for equipment maintenance, indoor and outdoor machinery installation at stations, docks, bridges, halls, and factories, equipment repair, and building maintenance. Scissor lifts typically raise and lower the scissor-type mechanical structure by moving the piston shaft of a hydraulic cylinder.

[0003] In order to avoid the problem of the lifting platform sliding down due to aging and rupture of hydraulic pipelines, overweight lifting, hydraulic cylinder pressure relief, etc., the existing lifting platform is provided with a lifting platform anti-slip device; when the existing anti-slip device is used, the lifting platform is raised to an ideal height, and then supported by an additional external support structure to play a role in preventing sliding. Before the lifting platform is lowered, the additional support structure needs to be removed, and the lifting platform can only be lowered after the support structure is removed; although the existing support structure can play a role in preventing sliding, the structure is relatively complex and needs to be disassembled and assembled before and after use. The disassembly and assembly time is long and time-consuming and labor-intensive, which affects work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-slip device for a lifting platform, when the top of the X-shaped support frame rises, the sliding block slides to the right on the rotating shaft and the limit assembly cooperates with the sliding block; when the top of the X-shaped support frame rises to the highest limit, the rotating shaft reverses and pushes the connecting plate to slide inward, the limit assembly and the sliding block cancel the cooperation, and the top of the X-shaped support frame can be lowered. Whether the limit assembly works is controlled by the lifting and lowering of the X-shaped support frame, and the anti-slip structure does not need to be controlled separately, the operation is simple and convenient, time and labor are saved, and work efficiency is improved.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lifting platform anti-slip device, comprising a base and an X-shaped support frame arranged on the base, an upper platform is arranged on the top of the X-shaped support frame, a hydraulic cylinder cooperating with the X-shaped support frame is arranged on the top of the base, a rotating shaft is arranged transversely symmetrically on the top of the base, a sliding block is arranged on the rotating shaft and slidingly arranged on the top of the base, one side of the bottom of the X-shaped support frame is hinged to the base and the other side is hinged to the sliding block, a first driving component for driving the rotating shaft to rotate is arranged on the sliding block, a connecting plate is arranged on the base and longitudinally slides on the inner side of the rotating shaft, a second driving component for driving the connecting plate to slide is arranged at both ends of the rotating shaft, and a plurality of limit components cooperating with the sliding block are arranged on the connecting plate.

[0006] Preferably, the first driving assembly includes a guide groove, the guide groove is transversely arranged on the rotating shaft, and the sliding block is embedded with a guide block that cooperates with the guide groove.

[0007] Preferably, the second drive assembly includes a first articulated shaft and a second articulated shaft, the first articulated shaft is eccentrically arranged at the end of the rotating shaft, the second articulated shaft is fixedly arranged at the end of the connecting plate, and a connecting rod is hinged between the first articulated shaft and the second articulated shaft.

[0008] Preferably, the limiting assembly includes a fixed seat, which is arranged on the outer side of the connecting plate, and an L-shaped limiting plate is arranged on the outer side of the fixed seat for one-way rotation, a tension spring is arranged between the fixed seat and the top of the L-shaped limiting plate, and a limiting block that cooperates with the L-shaped limiting plate is fixedly arranged on the inner side of the sliding block.

[0009] Preferably, a transverse slideway is provided on the top of the base in a front-to-back symmetrical manner, and a transverse sliding block is fixedly provided on the bottom of the sliding block to cooperate with the transverse slideway.

[0010] Preferably, longitudinal slideways are symmetrically provided on the top of the base, and a longitudinal sliding block cooperating with the longitudinal slideway is fixedly provided on the bottom of the connecting plate.

[0011] Preferably, support seats are rotatably provided at both ends of the rotating shaft, and the support seats are fixedly provided on the base.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] When the top of the X-shaped support frame rises, the sliding block slides to the right on the rotating shaft and the limiting component cooperates with the sliding block. The sliding block cooperates. When the top of the X-shaped support frame rises to the highest limit, the shaft reverses and pushes the connecting plate to slide inward. The limit assembly and the sliding block cancel the cooperation, and the top of the X-shaped support frame can be lowered. When the top of the X-shaped support frame drops to the lowest limit, the shaft rotates forward and pushes the connecting plate to slide outward. The limit assembly cooperates with the sliding block, and the limit assembly again limits the sliding block. Whether the limit assembly works is controlled by the lifting and lowering of the X-shaped support frame. The anti-slip structure does not need to be controlled separately. The operation is simple and convenient, saving time and effort, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 Schematic diagram of the local decomposition structure;

[0016] Figure 3 For this utility model Figure 2 Schematic diagram of the local structure;

[0017] Figure 4 For this utility model Figure 3 Schematic diagram of the local decomposition structure Figure 1 ;

[0018] Figure 5 For this utility model Figure 3 Schematic diagram of the local decomposition structure Figure 2 ;

[0019] Figure 6 For this utility model Figure 3 Schematic diagram of the local decomposition structure Figure 3 ;

[0020] Figure 7 For this utility model Figure 6 Schematic diagram of the local explosion structure;

[0021] Figure 8 For this utility model Figure 6 Schematic diagram of the three-dimensional structure of the middle limit assembly from the second perspective;

[0022] Figure 9 For this utility model Figure 8 Schematic diagram of the local explosion structure;

[0023] Figure 10 For this utility model Figure 5 Schematic diagram of the planar structure of the transfer shaft.

[0024] In the picture:

[0025] 1-base, 2-universal wheel, 3-X-type support frame, 4-upper platform, 5-hydraulic cylinder, 6-articulated seat, 7-rotating shaft, 8-support seat, 9-sliding block, 10-transverse slide, 11-transverse slider, 12-guide groove, 13-guide block, 14-connecting plate, 15-longitudinal slide, 16-longitudinal slider, 17-first hinge axis, 18-second hinge axis, 19-connecting rod, 20-limiting assembly, 2001-fixed seat, 2002-L-type limiting plate, 2003-first support rod, 2004-second support rod, 2005-tension spring, 2006-limiting block, 2007-rib plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] like Figure 1-10 As shown, a lifting platform anti-slip device includes a base 1, combined with Figure 1 or Figure 2 As shown, universal wheels 2 are fixed at the four corners of the bottom of the base 1, two sets of X-shaped support frames 3 are symmetrically arranged on the base 1, and a rotating shaft 7 is symmetrically arranged on the top of the base 1. Figure 4 and Figure 5As shown, both ends of the rotating shaft 7 are rotatably provided with support seats 8, and the support seats 8 are fixedly provided on the base 1. It should be noted that: when the rotating shaft 7 rotates on the support seats 8, the position of the rotating shaft 7 does not change left and right, and a sliding block 9 is slidably provided on the rotating shaft 7 and located at the top of the base 1. Furthermore, a transverse slide 10 is symmetrically provided on the top of the base 1 and located between the two support seats 8. The bottom of the sliding block 9 is fixedly provided with a transverse slider 11 that cooperates with the transverse slide 10. Preferably, the sliding block 9 is slidably provided on the base 1 to prevent the sliding block 9 from rotating with the rotation of the rotating shaft 7 when the rotating shaft 7 rotates. A hinge seat 6 is fixedly provided on the top of the base 1, one side of the bottom of the X-shaped support frame 3 is hinged on the hinge seat 6, and the other side is hinged on the sliding block 9. An upper platform 4 is provided on the top of the X-shaped support frame 3, and a hydraulic cylinder 5 for driving the upper platform 4 to rise and fall is provided on the base 1 and located between the two X-shaped support frames 3.

[0028] Specifically in this embodiment, combined with Figure 3 、 Figure 4 and Figure 5 As shown, the sliding block 9 is provided with a first driving assembly for driving the rotating shaft 7 to rotate. Further, the first driving assembly includes a guide groove 12, which is horizontally opened on the outer surface of the rotating shaft 7. A guide block 13 that cooperates with the guide groove 12 is vertically embedded in the sliding block 9. It should be noted that: Figure 10 As shown, the guide groove 12 consists of two straight slots, the two ends of which are connected to each other. When the guide block 13 switches from one straight slot to another, the rotating shaft 7 rotates forward or reversely.

[0029] Specifically in this embodiment, combined with Figure 4 and Figure 5 As shown, a connecting plate 14 is provided on the base 1 and is located on the inner side of the rotating shaft 7 for longitudinal sliding. Furthermore, a longitudinal slide 15 is symmetrically provided on the top of the base 1. A longitudinal slider 16 cooperating with the longitudinal slide 15 is fixedly provided at the bottom of the connecting plate 14. Both ends of the rotating shaft 7 are provided with a second driving assembly for driving the connecting plate 14 to slide. Furthermore, the second driving assembly includes a first hinge shaft 17 and a second hinge shaft 18. The first hinge shaft 17 is eccentrically arranged at the end of the rotating shaft 7, and the second hinge shaft 18 is fixedly arranged at the end of the connecting plate 14. A connecting rod 19 is hinged between the first hinge shaft 17 and the second hinge shaft 18.

[0030] Specifically in this embodiment, combined with Figure 1 、 Figure 2 As shown, the connecting plate 14 is provided with a plurality of limit assemblies 20 that cooperate with the sliding block 9. Figure 6 、 Figure 7 and Figure 9 As shown, the limiting assembly 20 includes a fixing seat 2001, and the fixing seat 2001 is arranged on the outer side of the connecting plate 14. An L-shaped limiting plate 2002 is provided on the outer side of the fixing seat 2001 for unidirectional rotation. When the sliding block 9 slides to the right, the limiting block 2006 is driven to slide to the right. When the limiting block 2006 slides to the right, the L-shaped limiting plate 2002 contacts the limiting block 2006, and the L-shaped limiting plate 2002 rotates. When the L-shaped limiting plate 2002 rotates, the short side is separated from the outer side of the fixing seat 2001. When the limiting block 2006 moves backward to contact the L-shaped limiting plate 2006, the L-shaped limiting plate 2002 rotates. After the limit plate 2002 is separated, the L-shaped limit plate 2002 is reset by the tension spring 2005. The top of the fixed seat 2001 is fixedly provided with a first support rod 2003, and the top of the L-shaped limit plate 2002 is fixedly provided with a second support rod 2004. A tension spring 2005 is provided between the first support rod 2003 and the second support rod 2004. The inner side of the sliding block 9 is fixedly provided with a limit block 2006 that cooperates with the L-shaped limit plate 2002. Preferably, a rib 2007 is provided on the inner side of the sliding block 9 and on the right side of the limit block 2006.

[0031] When the top of the X-shaped support frame 3 rises to the highest limit, the shaft 7 is reversed to push the connecting plate 14 to slide backward, and the limit assembly 20 and the sliding block 9 are cancelled, so that the top of the X-shaped support frame 3 can be smoothly lowered. When the top of the X-shaped support frame 3 drops to the lowest limit, the shaft 7 rotates forward to push the connecting plate 14 to slide outward, and the limit assembly 20 cooperates with the sliding block 9, and the limit assembly 20 again plays the role of limiting the sliding block 9. Whether the limit assembly 20 works is controlled by the lifting and lowering control of the X-shaped support frame 3, and the anti-slip structure does not need to be controlled separately, which is simple and convenient to operate, saving time and effort and improving work efficiency.

[0032] Working principle:

[0033] When the upper platform 4 is controlled to rise, the top of the X-shaped support frame 3 is first driven to move upward by controlling the extension of the hydraulic cylinder 5. During the upward movement of the top of the X-shaped support frame 3, the spacing between the bottom of the X-shaped support frame 3 gradually becomes smaller. Because one side of the bottom of the X-shaped support frame 3 is hinged to the base 1 through the hinge seat 6, the other side of the bottom of the X-shaped support frame 3 slides on the rotating shaft 7 toward the side close to the hinge seat 6 through the sliding block 9. At this time, the limit assembly 20 is in a working state. When the limit assembly 20 is in a working state, the sliding block 9 can only slide toward the side close to the hinge seat 6 and cannot slide toward the side away from the hinge seat 6. When the upper platform 4 is raised to the ideal position, a group of limit assemblies 20 closest to the sliding block 9 on the connecting plate 14 cooperates with the sliding block 9.

[0034] When the cooperation between the limit assembly 20 and the sliding block 9 is cancelled, the extension of the hydraulic cylinder 5 continues to be controlled. When the top of the X-shaped support frame 3 rises to the maximum limit, the guide block 13 on the sliding block 9 cooperates with the guide groove 12 on the rotating shaft 7 to reverse the rotating shaft 7. When the rotating shaft 7 reverses, it pushes the connecting plate 14 and the limit assembly 20 on the connecting plate 14 to slide inward, so that the limit assembly 20 and the sliding block 9 are cancelled. At this time, the X-shaped support frame 3 can land smoothly. When the X-shaped support frame 3 drops to the lowest limit, the rotating shaft 7 rotates forward to push the connecting plate 14 to slide outward, and the limit assembly 20 cooperates with the sliding block 9. The limit assembly 20 again plays a role in limiting the sliding block 9. The cooperation between the limit assembly 20 and the sliding block 9 is controlled by the lifting and lowering of the X-shaped support frame 3.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A lifting platform anti-slip device, comprising a base (1) and an X-shaped support frame (3) arranged on the base (1), an upper platform (4) being arranged on the top of the X-shaped support frame (3), and a hydraulic cylinder (5) cooperating with the X-shaped support frame (3) being arranged on the top of the base (1), characterized in that: A rotating shaft (7) is symmetrically arranged on the top of the base (1), a sliding block (9) is slidably arranged on the rotating shaft (7) and located on the top of the base (1), one side of the bottom of the X-shaped support frame (3) is hinged to the base (1) and the other side is hinged to the sliding block (9), a first driving component for driving the rotating shaft (7) to rotate is arranged on the sliding block (9), a connecting plate (14) is longitudinally slidably arranged on the inner side of the rotating shaft (7) on the base (1), a second driving component for driving the connecting plate (14) to slide is arranged at both ends of the rotating shaft (7), and a plurality of limit assemblies (20) cooperating with the sliding block (9) are arranged on the connecting plate (14).

2. The anti-slip device for a lifting platform according to claim 1, characterized in that: The first driving assembly comprises a guide groove (12), the guide groove (12) is transversely arranged on the rotating shaft (7), and the sliding block (9) is embedded with a guide block (13) matched with the guide groove (12).

3. The anti-slip device for a lifting platform according to claim 1, characterized in that: The second driving assembly includes a first hinge shaft (17) and a second hinge shaft (18), wherein the first hinge shaft (17) is eccentrically arranged at the end of the rotating shaft (7), and the second hinge shaft (18) is fixedly arranged at the end of the connecting plate (14), and a connecting rod (19) is hinged between the first hinge shaft (17) and the second hinge shaft (18).

4. The anti-slip device for a lifting platform according to claim 1, characterized in that: The limiting assembly (20) comprises a fixed seat (2001), the fixed seat (2001) is arranged on the outer side of the connecting plate (14), an L-shaped limiting plate (2002) is arranged on the outer side of the fixed seat (2001) for unidirectional rotation, a tension spring (2005) is arranged between the fixed seat (2001) and the top of the L-shaped limiting plate (2002), and a limiting block (2006) that cooperates with the L-shaped limiting plate (2002) is fixedly arranged on the inner side of the sliding block (9).

5. The anti-slip device for a lifting platform according to claim 1, characterized in that: A transverse slideway (10) is symmetrically provided on the top of the base (1) in the front and rear directions, and a transverse sliding block (11) is fixedly provided on the bottom of the sliding block (9) and is matched with the transverse slideway (10).

6. The anti-slip device for a lifting platform according to claim 1, characterized in that: A longitudinal slideway (15) is symmetrically provided on the top of the base (1), and a longitudinal slider (16) cooperating with the longitudinal slideway (15) is fixedly provided on the bottom of the connecting plate (14).

7. The anti-slip device for a lifting platform according to claim 1, characterized in that: Support seats (8) are rotatably provided at both ends of the rotating shaft (7), and the support seats (8) are fixedly provided on the base (1).

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