Electric multifunctional crane

Abstract

The utility model is applicable to the technical field of lifting devices, and provides an electric multifunctional crane, which comprises a vehicle body, a lifting platform and a shear fork mechanism, the lifting platform comprises a working platform, a guardrail and two protective doors are arranged at the top of the working platform, the working platform comprises a platform shell, and a containing cavity with an opening in one side is arranged in the platform shell. A supporting plate trailer is arranged in the containing cavity, clamping blocks are installed on the two sides of the supporting plate trailer, sliding grooves are formed in the two sides of the interior of the containing cavity, and the clamping blocks are clamped into the sliding grooves; the two protective doors are installed at the top close to the opening of the containing cavity and can rotate towards the two sides of the opening of the containing cavity correspondingly. A fixing device is installed at the bottom of the protective door and can prevent the protective door from rotating when the protective door is closed. Therefore, the device not only can realize the function of aloft work of a common lifting lifter, but also can carry goods and be used as a movable lifting platform.

Description

Technical Field

[0001] The utility model is applicable to the technical field of lifting devices and provides an electric multifunctional crane. Background Art

[0002] Cranes are a type of mechanical equipment commonly used in the fields of equipment processing, material handling, and lifting work platforms. Under normal circumstances, electric cranes are a type of lifting and loading and unloading mechanical equipment. The lifting platform with a scissor-type mechanical structure has high stability, a wide working platform and a high load-bearing capacity, which makes the high-altitude operation range larger and suitable for multiple people to work at the same time. It makes high-altitude operations more efficient and safer.

[0003] In the current construction industry, mechanical equipment used for lifting usually includes tower cranes, electric hoists, and lifting platforms. Their application scenarios are different. In the case of long-distance high-altitude transportation, tower cranes are suitable for lifting and transportation. However, the tower cranes are set up at a long safety distance, which results in only one or two tower cranes serving the construction of the same building at the same time. In busy operations, the use of tower cranes often requires a long time of coordination and queuing, which greatly affects the construction time; electric hoists are only suitable for short-distance lifting operations, not for cross-floor or even multi-floor transportation operations; lifting platforms are often only suitable for lifting workers for high-altitude construction, which is inconvenient in transporting materials. Utility Model Content

[0004] In view of the above-mentioned defects, the purpose of the utility model is to provide an electric multifunctional crane, the purpose of which is to solve the problems raised in the background technology, comprising a car body, a lifting platform and a scissor-type mechanism for driving the lifting platform to rise and fall, the lifting platform comprising a working platform installed on the top of the scissor-type mechanism, and a guardrail and two protective doors are installed on the top of the working platform, characterized in that the working platform comprises a platform shell, a accommodating chamber with an opening on one side is provided inside the platform shell, a supporting plate trolley is provided inside the accommodating chamber, blocks are installed on both sides of the supporting plate trolley, slide grooves are provided on both sides of the accommodating chamber, and the blocks are clamped in the slide grooves; the two protective doors are rotatably connected to the top of the platform shell, the two protective doors are installed on the top near the opening of the accommodating chamber, and the two protective doors can rotate to both sides of the opening of the accommodating chamber respectively; a fixing device is installed at the bottom of the protective door, and the fixing device can prevent the protective door from rotating when the protective door is closed.

[0005] Furthermore, one end of the support pallet trolley close to the opening of the accommodating cavity is fixedly connected to a handle, and a detachable plug-in plate is plugged into the top of the platform shell, and the plug-in plate is arranged between the handle and the support pallet trolley.

[0006] Furthermore, a plurality of pulleys are fixedly connected to the bottom of the support pallet truck.

[0007] Furthermore, an anti-skid layer is installed on the top of the supporting pallet truck.

[0008] Furthermore, the protective door includes a rotating door rod, a transverse door rod and a locking door rod; the rotating door rod is rotatably connected to the platform shell, and the rotating door rod is fixedly connected to the locking door rod through the transverse door rod.

[0009] Furthermore, both upper and lower ends of the revolving door rod are fixedly connected with plug connectors, and the upper and lower plug connectors are respectively plugged into the guardrail and the platform shell.

[0010] Furthermore, the locking door rod is provided with a cavity which passes through the bottom, the fixing device includes a plug-in rod which is sleeved in the cavity, a spring is installed between the top of the plug-in rod and the cavity, and a plug is installed at the bottom of the plug-in rod; a handle is installed on the plug-in rod, and the handle passes through the locking door rod through the installation groove on the locking door rod, and a plug-in hole corresponding to the plug is provided on the top of the platform shell.

[0011] Therefore, the device can not only realize the function of high-altitude operations of ordinary lifting elevators, but also can be used to transport goods and as a mobile lifting platform. When used to transport goods at different heights, it can form a mobile platform overlapped with the floor slab, which is convenient for material transportation and ensures the safety of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the side structure of the crane;

[0013] Figure 2 for Figure 1 A schematic diagram of the structure in direction A;

[0014] Figure 3 This is a cross-sectional view of the working platform;

[0015] Figure 4 A three-dimensional schematic diagram of a support plate cart;

[0016] Figure 5 This is a top view of the lifting platform;

[0017] Figure 6 This is a schematic diagram of the protective door structure;

[0018] Figure 7 for Figure 2 A magnified view of the structure of part B;

[0019] In the figure: 01-car body; 02-scissor mechanism; 03-lifting platform; 04-working platform;

[0020] 1- platform shell; 101- accommodation chamber; 102-; 11- slide table; 12- plug board;

[0021] 2-supporting cart; 21-supporting plate; 22-pulley; 23-anti-slip layer; 24-block; 25-handle; 3-guardrail;

[0022] 4-protective door; 41-rotating door rod; 411-plug connector; 42-transverse door rod; 43-locking door rod; 431-plug rod; 4310-screw hole; 432-plug; 433-handle; 434-spring. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] See also Figure 1-7 The purpose of the utility model is to provide an electric multifunctional crane, including a car body 01, a scissor mechanism 02 is installed on the top of the car body 01, a lifting platform 03 is installed on the top of the scissor mechanism 02, a driving motor capable of driving the scissor mechanism 02 is installed inside the car body 01, the extension and contraction of the scissor mechanism 02 can drive the lifting platform 03 to rise and fall, and the lifting platform 03 includes a working platform 04 installed on the top of the scissor mechanism 02. Guardrails 3 and protective doors 4 are installed on the top of the working platform 04. The protective door 3 and a plurality of guardrails 2 surround the top of the working platform 04, and together form a protective structure of the aerial work lifting platform to ensure the safety of the operators.

[0025] As an embodiment of the present scheme, the working platform 04 includes a platform shell 1, a receiving chamber 101 with an opening on one side is provided inside the platform shell 1, a support pallet 2 is provided inside the receiving chamber 101, blocks 24 are fixedly connected to both sides of the support pallet 2, a slide 11 is fixedly connected to both sides of the receiving chamber 101, a slide groove is provided on the slide 11, and the blocks 24 are clamped inside the slide groove. Specifically, the slide groove is a closed slide groove at both ends; the blocks 24 on both sides of the support pallet 2 can slide in the two slide grooves respectively and cannot be separated from the slide grooves. The staff can pull the support pallet 2 out of the opening of the receiving chamber 101, and after the support pallet 2 is pulled out for a distance, the end of the slide groove can clamp the blocks 24 to limit the support pallet 2.

[0026] The protective door 4 is rotatably connected to the top of the platform shell 1; two protective doors 4 are installed on the top of the platform shell 1; the two protective doors 4 are installed at the top near the opening of the accommodating chamber 101, and the two protective doors 4 can rotate to both sides of the opening of the accommodating chamber 101. Specifically, the rotating door rods 41 of the two protective doors 4 are installed on both sides of the opening of the accommodating chamber 101, and when the two protective doors 4 are opened, the two protective doors 4 can form two protective door fences on both sides of the opening of the accommodating chamber 101. A fixing device is installed at the bottom of the protective door 4, which can prevent the protective door 4 from rotating when the protective door 4 is closed.

[0027] In the specific use scenario of the above scheme, when the scissor mechanism 02 is in the retracted state, the staff can open the two protective doors 4, and carry building materials and other materials from the ground to the lifting platform 03. After the transportation is completed, the protective door 4 is closed, the scissor mechanism 02 is controlled to extend, and the lifting platform 03 rises. After rising to the specified floor height, the staff can open the protective door 4 and pull the support cart 2 out of the accommodating chamber 101. At this time, the end of the support cart 2 away from the accommodating chamber 101 can be placed on the floor, and the other end is still connected to the accommodating chamber 101 due to the cooperation of the clamping block 24 and the slide groove. The staff can walk through the top of the support cart 2 to carry the materials. At the same time, the two protective doors 4 can form two protective door fences to ensure the safety of personnel.

[0028] As a preferred solution of this embodiment, one end of the support pallet 2 near the opening of the accommodating chamber 101 is fixedly connected to a handle 25, and a detachable plug-in plate 12 is plugged into the top of the platform housing 1, and the plug-in plate 12 is arranged between the handle 25 and the support pallet 2. The handle 25 can facilitate the staff to pull the support pallet 2 out of the accommodating chamber 101. At the same time, when the support pallet 2 is inside the accommodating chamber 101, the plug-in plate 12 can play a fixing role to prevent the support pallet 2 from sliding out of the accommodating chamber 101 by itself during the working process, thereby ensuring the safe operation of the equipment.

[0029] As a preferred solution of this embodiment, a plurality of pulleys 22 are fixedly connected to the bottom of the support pallet 2. The pulleys 22 can facilitate the staff to pull the support pallet 2 out of the accommodating chamber 101 more labor-savingly, and reduce the resistance when pulling the support pallet 2 out of the accommodating chamber 101.

[0030] As a preferred solution of this embodiment, an anti-skid layer 23 is fixedly connected to the top of the support plate trolley 2. The anti-skid layer 23 can play an anti-skid role, preventing the soles of the feet from slipping in rainy days or other special weather conditions, and ensuring the safety of workers when working at heights.

[0031] As a preferred solution of this embodiment, the protective door 4 includes a rotating door rod 41, a transverse door rod 42 and a locking door rod 43. The rotating door rod 41 is rotatably connected to the platform shell 1, and the rotating door rod 41 is fixedly connected to the locking door rod 43 through the transverse door rod 42. The upper and lower ends of the rotating door rod 41 are fixedly connected with plug connectors 411, and the upper and lower plug connectors 411 are respectively plugged into the guardrail 3 and the platform shell 1, so that the rotating door rod 41 can rotate. The fixing device is installed at the bottom of the locking door rod 43. Specifically, there are two transverse door rods 42, and the transverse door rods 42 are arranged in parallel with each other. A plurality of vertical door rods are fixedly connected between the two transverse door rods 42, which can better ensure the safety of the operation for the staff.

[0032] As a preferred solution of this embodiment, a cavity penetrating the bottom is provided inside the locking door rod 43, and the fixing device includes a plug rod 431, which is sleeved inside the cavity, and a spring 434 is installed between the top of the plug rod 431 and the inner top of the cavity, and a plug 432 is fixedly connected to the bottom of the plug rod 431; a handle 433 is installed on the plug rod 431, and the handle 433 passes through the locking door rod 43 through the installation groove on the locking door rod 43, and a plug hole 102 corresponding to the plug 432 is provided on the top of the platform housing 1. Therefore, the plug 432 is inserted into the plug hole 102 to limit the protective door 4. The staff can also pull up the plug rod 431 through the handle 433 to disengage the plug 432 from the plug hole 102 at the top of the platform shell 1, thereby unlocking the protective door 4. After unlocking, the protective door 4 opens, and after being adjusted to the correct position, under the action of the spring 434, the plug 432 has a downward pressing force, and the plug 432 can abut against the floor slab, which to a certain extent prevents the protective door 4 from rotating and displacing, thereby improving the protective safety of the protective door 4.

[0033] In summary, in actual use: when the scissor mechanism 02 is in a retracted state, the staff can open the two protective doors 4 through the handle 433, and carry building materials and other materials from the ground to the lifting platform 03. After the transportation is completed, the protective door 4 is closed and the protective door 4 is locked by operating the handle 433. The staff controls the scissor mechanism 02 to extend, and the lifting platform 03 rises. After rising to the specified floor height, the staff opens the protective door 4 by operating the handle 433, and pulls the support plate 2 out of the accommodating chamber 101. At this time, the end of the support plate 2 away from the accommodating chamber 101 can be placed on the floor, and the other end is still clamped in the accommodating chamber 101 due to the cooperation of the clamping block 24 and the slide. At this time, since only the clamping block 24 is clamped with the slide, the support plate 2 can have a certain degree of inclination, which can be more conveniently overlapped on the floor. At the same time, the fixing device at the bottom of the protective door 4 can play a role in abutting and fixing the protective door 4 with the floor slab. The two protective doors 4 are respectively on both sides of the supporting plate trolley 2 to play a protective role, and the fixing device can further enhance the protectiveness of the protective door 4. The staff can walk through the top of the supporting plate trolley 2 to carry the materials.

[0034] Therefore, the device can not only realize the function of high-altitude operations of ordinary lifting elevators, but also can be used to transport goods and as a mobile lifting platform. When used to transport goods at different heights, it can form a mobile platform overlapped with the floor slab, which is convenient for material transportation and ensures the safety of users.

[0035] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. An electric multifunctional crane, comprising a vehicle body (01), a lifting platform (03) and a scissor mechanism (02) for driving the lifting platform (03) to rise and fall, the lifting platform (03) comprising a working platform (04) installed on the top of the scissor mechanism (02), a guardrail (3) and two protective doors (4) installed on the top of the working platform (04), characterized in that: The working platform (04) comprises a platform shell (1), a receiving chamber (101) with an opening on one side is provided inside the platform shell (1), a supporting pallet truck (2) is provided inside the receiving chamber (101), clamping blocks (24) are installed on both sides of the supporting pallet truck (2), sliding grooves are provided on both sides of the receiving chamber (101), and the clamping blocks (24) are clamped inside the sliding grooves; The two protective doors (4) are both rotatably connected to the top of the platform shell (1), and the two protective doors (4) are both installed at the top near the opening of the accommodating chamber (101), and the two protective doors (4) can rotate toward both sides of the opening of the accommodating chamber (101) respectively; A fixing device is installed at the bottom of the protective door (4), and the fixing device can prevent the protective door (4) from rotating when the protective door (4) is closed.

2. The electric multifunctional crane according to claim 1, characterized in that: One end of the support pallet trolley (2) close to the opening of the accommodating cavity (101) is fixedly connected to a handle (25); a detachable plug-in plate (12) is plugged into the top of the platform shell (1); and the plug-in plate (12) is arranged between the handle (25) and the support pallet trolley (2).

3. The electric multifunctional crane according to claim 1, characterized in that: A plurality of pulleys (22) are fixedly connected to the bottom of the support plate cart (2).

4. The electric multifunctional crane according to claim 1, characterized in that: An anti-slip layer (23) is installed on the top of the supporting pallet truck (2).

5. The electric multifunctional crane according to claim 1, characterized in that: The protective door (4) comprises a rotating door rod (41), a transverse door rod (42) and a locking door rod (43); the rotating door rod (41) is rotatably connected to the platform shell (1), and the rotating door rod (41) is fixedly connected to the locking door rod (43) via the transverse door rod (42).

6. The electric multifunctional crane according to claim 5, characterized in that: The upper and lower ends of the rotating door rod (41) are fixedly connected with plug connectors (411), and the upper and lower plug connectors (411) are respectively plugged into the guardrail (3) and the platform shell (1).

7. The electric multifunctional crane according to claim 6, characterized in that: The locking door rod (43) is provided with a cavity which is communicated with the bottom, the fixing device comprises a plug-in rod (431) which is sleeved in the cavity, a spring (434) is installed between the top of the plug-in rod (431) and the cavity, and a plug (432) is installed at the bottom of the plug-in rod (431); a handle (433) is installed on the plug-in rod (431), and the handle (433) passes through the locking door rod (43) through the installation groove on the locking door rod (43), and a plug-in hole (102) corresponding to the plug (432) is provided on the top of the platform shell (1).

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