Safety protection device of lifting platform

Abstract

The utility model discloses a safety protection device of a lifting platform, which relates to the technical field of lifting platforms and comprises a fence and a plurality of blocking components, and the fence is fixedly connected with three first reinforcing plates, a positioning plate and two pin hole plates. By means of the fence, the protective door and the lower clamping assembly, after the protective door rotates to make contact with a positioning plate on the fence, an L-shaped clamping plate and a sleeve shaft on the lower clamping assembly can be connected with a sleeve column barrel on the protective door in a sleeved mode, and therefore the protective door can be fixedly connected left, right, front and back; therefore, the protective door and the fence form a whole, the tensile effect of the protective door can be improved, and the protective effect of the protective device is prevented from being affected by loosening of the protective door.

Description

Technical Field

[0001] The utility model relates to a protection device, in particular to a safety protection device for a lifting platform. Background Art

[0002] A lifting platform is a lifting machine that transports people or objects vertically. It also refers to equipment for vertical transportation in logistics systems such as factories and automatic warehouses. The lifting platform is often equipped with various flat conveying equipment as a connecting device for conveyor lines at different heights. It is generally driven by hydraulics, so it is called a hydraulic lifting platform. In addition to being used for transporting goods at different heights, it is widely used in high-altitude installation, maintenance and other operations. The free lifting characteristics of the lifting platform have been widely used in municipal maintenance, cargo transportation at docks and logistics centers, building decoration, etc. It can walk freely after installing automobile chassis, battery car chassis, etc., and the working height space has also changed. It has the advantages of light weight, self-propelled, electric start, self-supporting legs, simple operation, large working surface, and the ability to cross obstacles for high-altitude operations, etc. 360-degree free rotation. In order to ensure safety, it is generally necessary to set up safety protection devices for the lifting platform.

[0003] At present, there are still some defects and deficiencies in the use of protective devices. The specific areas that need to be improved are as follows:

[0004] 1. The existing protective device is relatively simple in connecting the protective door, which makes the overall tensile strength of the connection between the protective door and the fence poor, making it easy for the protective door to shift or loosen during operation;

[0005] 2. The existing protective device is generally fixedly connected to the barrier net, which is inconvenient for maintenance and replacement. Utility Model Content

[0006] The purpose of the utility model is to provide a safety protection device for a lifting platform 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 safety protection device for a lifting platform, comprising a fence and a plurality of blocking components, wherein the fence is fixedly connected with three first reinforcement plates, a positioning plate and two pin hole plates, the two pin hole plates are connected to the protection door, the protection door is connected to the lower card component, the three reinforcement plates are arranged in a cross shape and the lower side and the side opposite to the fence are provided with two first n-shaped holes, the plurality of the first n-shaped holes are divided into groups of four by four and each group is connected to the blocking component.

[0008] As a preferred technical solution of the utility model, the protective door includes a rotating shaft, the upper and lower ends of the rotating shaft are respectively socketed with two pin hole plates, the rotating shaft is fixedly connected to the guardrail and the fixed plate, the inside of the guardrail is fixedly connected to the second reinforcing plate, the second reinforcing plate is arranged in a cross shape and has two second n-shaped holes on the opposite sides of the guardrail and the fixed plate, the eight second n-shaped holes are divided into groups of four by four and the two groups are respectively connected to the other two blocking components.

[0009] As a preferred technical solution of the utility model, the upper and lower ends of the rear side of the left side surface of the guardrail are respectively fixedly connected to two perforated plates, the two perforated plates are both sleeved with the movable shaft, the movable shaft is fixedly connected to the fixed ring and the sleeve cylinder, the opposite sides of the fixed ring and the lower perforated plate are fixedly connected to the first elastic member, and the first elastic member is sleeved with the movable shaft.

[0010] As a preferred technical solution of the utility model, the lower end of the movable shaft is sleeved with a round hole opened on the platform, and the upper surface of the platform is fixedly connected to the fence.

[0011] As a preferred technical solution of the utility model, multiple blocking components include a fixed frame, a blocking net is fixedly connected to the inside of the fixed frame, the upper and lower sides of the fixed frame are provided with rectangular holes passing through left and right, and two sliding plates are sleeved in each rectangular hole, and the opposite ends of the two sliding plates are fixedly connected to the two buckle plates respectively.

[0012] As a preferred technical solution of the utility model, the opposite sides of the two sliding plates are fixedly connected to the second elastic member sleeved in the rectangular hole, and the opposite ends of the side surfaces of the two sliding plates are fixedly connected to the two limit plates respectively.

[0013] As a preferred technical solution of the utility model, the lower card assembly includes an L-shaped fixing plate, the bottom surface of the upper end of the L-shaped fixing plate is fixedly connected to the fixed end of the electric push rod, the protruding end of the electric push rod is fixedly connected to the L-shaped card plate, and the side plate of the L-shaped card plate is in contact with the right side surface of the rear end of the guardrail.

[0014] As a preferred technical solution of the present utility model, the inner bottom surface of the L-shaped clamping plate is fixedly connected to the sleeve shaft, the sleeve shaft is adapted to the sleeve cylinder, the L-shaped clamping plate is fixedly connected to the linkage plate, the linkage plate is sleeved in the sleeve frame, and the sleeve frame is fixedly connected to the upper end side of the L-shaped fixed plate.

[0015] As a preferred technical solution of the utility model, the plurality of buckle plates are arranged in an n-shaped shape and are divided into groups of four by four, and each group of the buckle plates is respectively adapted to one group of the first n-shaped holes or one group of the second n-shaped holes.

[0016] As a preferred technical solution of the utility model, the positioning plate is arranged in an L-shape and forms a dislocated clamping state with the L-shaped clamping plate on the guardrail.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model provides a fence, a protective door and a lower clamping assembly, so that after the protective door is rotated and contacts the positioning plate on the fence, the L-shaped clamping plate and the sleeve shaft on the lower clamping assembly can form a sleeve connection with the sleeve cylinder on the protective door, so that the protective door can be fixedly connected to the left and right front and back, so that the protective door and the fence form a whole, which can improve the tensile resistance of the protective door, thereby preventing it from loosening and affecting the protective effect of the protective device.

[0019] 2. The utility model provides the first n-shaped hole, the second n-shaped hole and the blocking assembly, so that the blocking assembly can be snap-connected to the fence or the protective door, thereby enhancing the protective effect of the lower side of the protective device. Secondly, the blocking assembly is also easy to install or disassemble, so that the blocking net on the blocking assembly can be easily repaired or replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the protective door structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the blocking component structure of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the lower card assembly of the utility model.

[0025] In the figure: 1 fence, 11 first reinforcement plate, 12 first n-shaped hole, 13 positioning plate, 14 pin hole plate, 2 protective door, 21 rotating shaft, 22 guardrail, 23 second reinforcement plate, 24 fixed plate, 25 second n-shaped hole, 26 sleeve hole plate, 27 movable shaft, 28 fixed ring, 29 first elastic member, 210 sleeve column, 3 blocking assembly, 31 fixed frame, 32 blocking net, 33 sliding plate, 34 sleeve buckle plate, 35 second elastic member, 36 limit plate, 4 lower card assembly, 41 L-shaped fixed plate, 42 electric push rod, 43 L-shaped card plate, 44 sleeve shaft, 45 linkage plate, 46 sleeve frame plate, 5 platform plate. DETAILED DESCRIPTION

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

[0027] See also Figure 1-5 The utility model provides a technical solution for a safety protection device for a lifting platform: it includes a fence 1 and a plurality of blocking components 3, the fence 1 is fixedly connected with three first reinforcing plates 11, a positioning plate 13 and two pin hole plates 14, the two pin hole plates 14 are connected to the protective door 2, the protective door 2 is connected to the lower card component 4, the three reinforcing plates 11 are all arranged in a cross shape and the lower side and the side opposite to the fence 1 are provided with two first n-shaped holes 12, the plurality of first n-shaped holes 12 are divided into a group of four by four and each group is connected to the blocking component 3, a control end is installed on the inner side of the fence 1, and the output end of the control end is electrically connected to the input end of the electric push rod 42.

[0028] The protective door 2 includes a rotating shaft 21, the upper and lower ends of which are respectively sleeved with two pin hole plates 14, the rotating shaft 21 is fixedly connected to the guardrail 22 and the fixed plate 24, the inside of the guardrail 22 is fixedly connected to the second reinforcing plate 23, the second reinforcing plate 23 is arranged in a cross shape and has two second n-shaped holes 25 on the opposite sides of the guardrail 22 and the fixed plate 24, the eight second n-shaped holes 25 are divided into groups of four by four and the two groups are respectively connected to the other two blocking components 3.

[0029] The upper and lower ends of the rear side of the left side surface of the guardrail 22 are fixedly connected to two perforated plates 26 respectively, and the two perforated plates 26 are both sleeved with the movable shaft 27. The movable shaft 27 is fixedly connected to the fixed ring 28 and the sleeve cylinder 210. The opposite sides of the fixed ring 28 and the lower perforated plate 26 are fixedly connected to the first elastic member 29. The first elastic member 28 is sleeved with the movable shaft 27, so that the L-shaped clamping plate 43 can drive the sleeve shaft 44 to be inserted into the sleeve cylinder 210 and press it down, so that the sleeve cylinder 210 drives the movable shaft 27 to descend, so that the movable shaft 27 drives the fixed ring 28 to squeeze the first elastic member 29 to generate elasticity, and at the same time, the lower end of the movable shaft 27 is inserted into the circular hole on the disk platform 5, so that the protective door 2 can form an integral connection state with the fence 1 and the platform 5.

[0030] The lower end of the movable shaft 27 is sleeved with a round hole provided on the platform 5 , and the upper surface of the platform 5 is fixedly connected with the fence 1 .

[0031] Multiple blocking components 3 all include a fixed frame 31, and a blocking net 32 ​​is fixedly connected to the inside of the fixed frame 31. The upper and lower sides of the fixed frame 31 are provided with rectangular holes that pass through the left and right sides, and two sliding plates 33 are sleeved in each rectangular hole. The inner upper and lower distance of the rectangular hole is three times the upper and lower distance of the sliding plate 33, which can facilitate the sliding plate 33 to slide up and down in the rectangular hole, thereby facilitating installation or disassembly operations. The opposite ends of the two sliding plates 33 are fixedly connected to the two buckle plates 34 respectively.

[0032] The opposite sides of the two sliding plates 33 are fixedly connected to the second elastic member 35 sleeved in the rectangular hole, and the opposite ends of the sides of the two sliding plates 33 are fixedly connected to the two limit plates 36 respectively. For the replacement of the blocking component 3, the limit plate 36 can be moved toward the first n-shaped hole 12 or the second n-shaped hole 25, so that the limit plate 36 drives the buckle plate 34 to slide in the first n-shaped hole 12 or the second n-shaped hole 25, so that the buckle plate 34 moves to a disengaged state, and then pushes the sliding plate upward. The movable plate 33 slides upward in the rectangular hole, so that the buckle plate 34 moves upward to the upper side of the first n-shaped hole 12 or the second n-shaped hole 25, and then the buckle plate 34 is also released from the buckling restriction, so that the second elastic member 35 pulls the buckle plate 34 on the sliding plate 33 to disengage from the first n-shaped hole 12 or the second n-shaped hole 25. In this way, the other buckle plates 34 can be released from the buckling restriction and disengaged, so that the blocking assembly 3 is disconnected as a whole and becomes isolated, so that the blocking assembly 3 can be removed.

[0033] The lower card assembly 4 includes an L-shaped fixing plate 41, the bottom surface of the upper end of the L-shaped fixing plate 41 is fixedly connected to the fixed end of the electric push rod 42, the extended end of the electric push rod 42 is fixedly connected to the L-shaped card plate 43, and the side plate of the L-shaped card plate 43 contacts the right side surface of the rear end of the guardrail 22.

[0034] The inner bottom surface of the L-shaped card plate 43 is fixedly connected to the sleeve shaft 44, the sleeve shaft 44 is adapted to the sleeve cylinder 210, the L-shaped card plate 43 is fixedly connected to the linkage plate 45, the linkage plate 45 is sleeved in the sleeve frame 46, and the sleeve frame 46 is fixedly connected to the upper end side of the L-shaped fixed plate 41. By controlling the electric push rod 42 on the lower card assembly 4 to extend, the electric push rod 42 drives the L-shaped card plate 43 to form a left and right clamping state of the guardrail 22 and the positioning plate 13, so that the protective door 2 can be closed to prevent it from moving left and right.

[0035] The plurality of buckle plates 34 are all arranged in an n-shaped shape and are divided into groups of four by four. Each group of buckle plates 34 is respectively adapted to one group of the first n-shaped holes 12 or one group of the second n-shaped holes 12. The buckle plates 34 are inserted into the first n-shaped holes 12 or the second n-shaped holes 25, and then slid downward so that the lower side plates of the buckle plates 34 are buckled downward to form a buckled state with the first n-shaped holes 12 or the second n-shaped holes 25. In this way, the replacement and installation of the blocking assembly 3 is completed.

[0036] The positioning plate 13 is set to be L-shaped and forms a dislocation clamping state with the L-shaped clamping plate 43 on the guardrail 22, which can prevent the guardrail 22 from moving left and right to form a restriction.

[0037] The operating steps of the utility model are:

[0038] Pull the protective door 2 to close, so that the rear end of the protective fence 22 on the protective door 2 is attached to the positioning plate 13, and then control the electric push rod 42 on the lower card assembly 4 to extend, and the electric push rod 42 drives the L-shaped card plate 43 to clamp the protective fence 22 and the positioning plate 13 to the left and right, so that the protective door 2 can be closed to prevent it from moving left and right. At the same time, the L-shaped card plate 43 drives the sleeve shaft 44 to be inserted into the sleeve cylinder 210 and press it down, so that the sleeve cylinder 210 drives the movable shaft 27 to descend, so that the movable shaft 27 drives the fixed ring 28 to squeeze the first elastic member 29 to generate elasticity, and at the same time, the lower end of the movable shaft 27 is inserted into the round hole on the disk platform 5, so that the protective door 2 can be connected with the fence 1 and the platform 5 in an integral state;

[0039] For replacement of the blocking assembly 3, the limiting plate 36 can be moved toward the first n-shaped hole 12 or the second n-shaped hole 25, so that the limiting plate 36 drives the buckle plate 34 to slide in the first n-shaped hole 12 or the second n-shaped hole 25, so that the buckle plate 34 moves to a state of being disengaged, and then the sliding plate 33 is pushed upward to slide upward in the rectangular hole, so that the buckle plate 34 moves upward to the upper side of the first n-shaped hole 12 or the second n-shaped hole 25, and then the buckle plate 34 also releases the buckle restriction at the same time, so that the second elastic member 35 pulls The buckle plate 34 on the sliding plate 33 is disengaged from the first n-shaped hole 12 or the second n-shaped hole 25, so that the other buckle plates 34 can be released from the buckling restrictions and disengaged, so that the blocking assembly 3 as a whole is disconnected and isolated. In this way, the blocking assembly 3 can be removed. When replacing, the buckle plate 34 can be inserted into the first n-shaped hole 12 or the second n-shaped hole 25, and then slid downward to make the lower side plate of the buckle plate 34 buckle downward and form a buckled state with the first n-shaped hole 12 or the second n-shaped hole 25. In this way, the replacement and installation of the blocking assembly 3 is completed.

[0040] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0042] Although the 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 safety protection device for a lifting platform, comprising a fence (1) and a plurality of blocking components (3), Features: The fence (1) is fixedly connected with three first reinforcing plates (11), a positioning plate (13) and two pin hole plates (14); the two pin hole plates (14) are connected to the protective door (2); the protective door (2) is connected to the lower card assembly (4); the three reinforcing plates (11) are all arranged in a cross shape and have two first n-shaped holes (12) on the lower side and on the side opposite to the fence (1); the plurality of first n-shaped holes (12) are divided into groups of four and four and each group is connected to the blocking assembly (3).

2. A safety protection device for a lifting platform according to claim 1, Features: The protective door (2) comprises a rotating shaft (21), the upper and lower ends of which are respectively sleeved with two pin hole plates (14), the rotating shaft (21) is fixedly connected to both the protective fence (22) and the fixed plate (24), the interior of the protective fence (22) is fixedly connected to the second reinforcing plate (23), the second reinforcing plate (23) is arranged in a cross shape and has two second n-shaped holes (25) on the sides opposite to the protective fence (22) and the fixed plate (24), the eight second n-shaped holes (25) are divided into a group of four by four, and the two groups are respectively connected to the other two blocking components (3).

3. A safety protection device for a lifting platform according to claim 2, Features: The upper and lower ends of the rear side of the left side of the guardrail (22) are respectively fixedly connected to two hole plates (26), and the two hole plates (26) are both sleeved with a movable shaft (27). The movable shaft (27) is fixedly connected to a fixed ring (28) and a sleeve cylinder (210). The opposite side of the fixed ring (28) and the lower hole plate (26) are fixedly connected to a first elastic member (29), and the first elastic member (29) is sleeved with the movable shaft (27).

4. A safety protection device for a lifting platform according to claim 3, Features: The lower end of the movable shaft (27) is sleeved with a circular hole provided on the platform (5), and the upper surface of the platform (5) is fixedly connected to the fence (1).

5. A safety protection device for a lifting platform according to claim 1, Features: The plurality of blocking components (3) each comprise a fixed frame (31), a blocking net (32) being fixedly connected inside the fixed frame (31), rectangular holes penetrating left and right are provided on the upper and lower sides of the fixed frame (31), and two sliding plates (33) are sleeved in each rectangular hole, and the opposite ends of the two sliding plates (33) are fixedly connected to two buckle plates (34) respectively.

6. A safety protection device for a lifting platform according to claim 5, Features: The opposite side surfaces of the two sliding plates (33) are fixedly connected to a second elastic member (35) sleeved in the rectangular hole, and the opposite ends of the side surfaces of the two sliding plates (33) are fixedly connected to two limit plates (36) respectively.

7. A safety protection device for a lifting platform according to claim 1, Features: The lower clamping assembly (4) comprises an L-shaped fixing plate (41), the bottom surface of the upper end of the L-shaped fixing plate (41) is fixedly connected to the fixed end of the electric push rod (42), the extended end of the electric push rod (42) is fixedly connected to the L-shaped clamping plate (43), and the side plate of the L-shaped clamping plate (43) is in contact with the right side surface of the rear end of the guardrail (22).

8. A safety protection device for a lifting platform according to claim 7, Features: The inner bottom surface of the L-shaped clamping plate (43) is fixedly connected to the sleeve shaft (44), the sleeve shaft (44) is matched with the sleeve cylinder (210), the L-shaped clamping plate (43) is fixedly connected to the linkage plate (45), the linkage plate (45) is sleeved in the sleeve frame (46), and the sleeve frame (46) is fixedly connected to the upper end side surface of the L-shaped fixed plate (41).

9. A safety protection device for a lifting platform according to claim 5, Features: The plurality of buckle plates (34) are all arranged in an n-shaped shape and are divided into groups of four by four, and each group of buckle plates (34) is respectively matched with one group of the first n-shaped holes (12) or one group of the second n-shaped holes (25).

10. A safety protection device for a lifting platform according to claim 1, Features: The positioning plate (13) is arranged in an L-shape and forms a dislocation clamping state with the L-shaped clamping plate (43) for the guardrail (22).

Images