Aerial work lifting platform with protective structure

Abstract

The utility model is applicable to the technical field of lifting devices, and provides a high-altitude operation lifting platform with a protective structure, which comprises a vehicle body, a working platform and a scissor fork mechanism for driving the working platform to ascend and descend, and is characterized in that the working platform comprises a bearing bottom plate arranged at the top of the scissor fork mechanism; a protective door and a guardrail are mounted at the top of the bearing bottom plate; the protective door comprises a first sleeve and a second sleeve which are mounted at the top of the bearing bottom plate, a rotating shaft is sleeved with the first sleeve, and a protective cross rod is mounted at the top of the rotating shaft; insertion blocks are installed at the bottoms of the protection transverse rods. The insertion block is sleeved with the second sleeve. A crawling ladder is installed on one side of the vehicle body, an ejector rod is installed on the top of the crawling ladder, and the ejector rod can separate the inserting block from the second sleeve by ejecting the rotating shaft when the working platform descends. Therefore, according to the lifting platform, the safety of workers can be guaranteed through the protection mechanism with the self-locking protection door, and the occurrence probability of accidents on a construction site is effectively reduced.

Description

Technical Field

[0001] The utility model is applicable to the technical field of lifting devices and provides a high-altitude work lifting platform with a protective structure. Background Art

[0002] The electric lifting platform is a multifunctional lifting and loading and unloading mechanical equipment, mostly driven by hydraulics. The scissor-type mechanical structure makes the lifting platform have higher stability, and the wide working platform and higher load-bearing capacity make the high-altitude working range larger and suitable for multiple people to work at the same time. It makes high-altitude work more efficient and safer. During the use of the electric lifting platform, in order to ensure the safety of use, a guardrail is often set at the top of the lifting platform.

[0003] The protective structure used on the lifting platform in the prior art usually refers to the safety fence, safety door and guardrail on the top of the lifting platform, as well as other safety belts and safety ropes used between the operator and the lifting platform. During the operation, the worker needs to open the safety door, close the safety door after climbing onto the lifting platform, and then use a latch or a door lock to lock the protective door from the inside to ensure the safety of the operation. However, these two methods are complicated to operate. In actual scenarios, it is often the case that operators do not use door locks to lock the door due to the complexity of the operation, or the latch is lost after a period of time, and they only use a thin wire to simply close the protective door and start the ascent operation. This is a violation of regulations, which poses a huge hidden danger to the safety of personnel during the construction process. Utility Model Content

[0004] In view of the above-mentioned defects, the purpose of the utility model is to provide an aerial work lifting platform with a protective structure, in order to solve the problems raised in the background technology, comprising a vehicle body, a working platform and a scissor-type mechanism for driving the working platform to rise and fall, characterized in that the working platform comprises a supporting base plate installed on the top of the scissor-type mechanism, and a protective door and a guardrail are installed on the top of the supporting base plate; the protective door comprises a first sleeve and a second sleeve installed on the top of the supporting base plate, a rotating shaft is sleeved inside the first sleeve, and a protective cross bar is installed on the top of the rotating shaft; an insert block is installed at the bottom of the protective cross bar; the insert block is sleeved inside the second sleeve; a ladder is installed on one side of the vehicle body, and a push rod is installed on the top of the ladder, and the push rod can separate the insert block from the second sleeve by pushing the rotating shaft when the working platform descends.

[0005] Furthermore, a first channel is provided inside the first sleeve, and a through hole corresponding to the first channel is provided on the supporting bottom plate, and the push rod can pass through the through hole and the first channel to push the rotating shaft upward.

[0006] Furthermore, a limiting portion is installed on the top of the second sleeve.

[0007] Furthermore, the insert block is a cylindrical structure, and the limiting portion is a semi-cylindrical structure.

[0008] Furthermore, the supporting base plate also includes an extension portion fixedly connected to one side thereof, and the extension portion is arranged correspondingly to the ladder above and below, and the protective door is installed on the extension portion.

[0009] Furthermore, handles are fixedly connected to the first sleeve and the second sleeve.

[0010] Furthermore, a bottom baffle is installed on the guardrail, and the bottom end of the bottom baffle is in contact with the supporting bottom plate.

[0011] Furthermore, the protective door also includes a protective door baffle, and the protective door baffle is installed on the protective cross bar through a plurality of protective door rods.

[0012] Furthermore, the ladder includes side rods installed on the vehicle body, and the top rod is vertically arranged on the top of the side rods and is integrally formed with the side rods.

[0013] The utility model ensures the safety of workers through a protection mechanism with a self-locking protection door. In actual use, workers only need to open and close the door without manual locking or manual latching. The minimum action is used to ensure the maximum safety, and effectively avoids the situation where construction workers do not use the door lock due to complicated operation, or the latch is lost, resulting in improper protection and illegal operation, effectively reducing the probability of accidents on the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a side view of the lifting platform when it is in the first state position;

[0015] Figure 2 It is a side view of the lifting platform when it is in the second state position;

[0016] Figure 3 It is a side view of the working platform when it is in the second state position;

[0017] Figure 4 This is a top view of the working platform;

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of the ladder;

[0019] Figure 6 for Figure 1 A structural cross-sectional view of part A;

[0020] Figure 7 is a schematic diagram of the matching structure of the second sleeve and the protective cross bar;

[0021] In the figure: 01-car body; 02-ladder; 021-side bar; 022-pedal; 023-top bar; 024-first mounting foot; 025-second mounting foot; 03-scissor mechanism; 04-working platform; 05-handle;

[0022] 1-supporting bottom plate; 11-extension portion; 2-guardrail; 21-bottom baffle;

[0023] 3-protective door; 31-insert block; 32-second sleeve; 321-limiting part; 33-rotating shaft; 34-protective cross bar; 341-insert block; 35-protective door rod; 36-protective door baffle. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-7 The purpose of the utility model is to provide an aerial work lifting platform with a protective structure, including a vehicle body 01, a scissor mechanism 03 is installed on the top of the vehicle body 01, a working platform 04 is installed on the top of the scissor mechanism 03, and a driving device capable of driving the scissor mechanism 03 is installed inside the vehicle body 01. The extension and contraction of the scissor mechanism 03 can drive the working platform 04 to rise and fall. A ladder 02 is fixedly connected to one side of the vehicle body 01, and the ladder 02 can be used for workers to climb to the top of the working platform 04.

[0026] The working platform 04 includes a supporting base plate 1 installed on the top of the scissor mechanism 03, and a protective door 3 and a plurality of guardrails 2 are fixedly connected to the top of the supporting base plate 1. The protective door 3 and the plurality of guardrails 2 surround the top of the working platform 04 and together constitute the protective structure of the aerial work lifting platform.

[0027] The protective door 3 includes a first sleeve 31 and a second sleeve 32 fixedly connected to the top of the supporting base plate 1, and a protective crossbar 34 rotatably connected to the first sleeve 31. The first sleeve 31 and the second sleeve 32 are arranged parallel to each other, and the first channel and the second channel are respectively provided inside the first sleeve 31 and the second sleeve 32, which are connected vertically. The supporting base plate 1 is provided with through holes corresponding to the first sleeve 31 and the second sleeve 32.

[0028] The bottom of the protective cross bar 34 is fixedly connected with a rotating shaft 33 and an insert block 341; specifically, the rotating shaft 33 and the insert block 341 are respectively fixedly connected to the bottom of both ends of the protective cross bar 34 along the length direction. The rotating shaft 33 and the insert block 341 are respectively sleeved inside the first sleeve 31 and the second sleeve 32; specifically, the rotating shaft 33 can move up and down in the first channel and can also rotate inside the first channel. The insert block 341 can move up and down in the second channel, and the insert block 341 can be separated from the second sleeve 32 when it moves upward to the upper limit position.

[0029] The top of the ladder 02 is fixedly connected with a top rod 023. Specifically, Figure 5 As shown, the ladder 02 includes two side rods 021 fixedly connected to the vehicle body 01 through a first mounting foot 024 and a second mounting foot 024, and the two side rods 021 are fixedly connected through a pedal 022; a top rod 023 is vertically arranged on the top of the side rod 021 and is formed integrally with the side rod 021. The top rod 023 can be inserted into the first sleeve 31 and abut against the rotating shaft 33.

[0030] like Figure 1 , 2 As shown, when the scissor mechanism 03 is in the retracted state, the lifting platform is in the first state position ( Figure 1 ); When the scissor mechanism 03 is in the extended state, the lifting platform is in the second state position ( Figure 2 In actual use, when the lifting platform is in the second state, the plug block 341 is sleeved inside the second sleeve 32, and the protective door rod 35 cannot rotate under the fixation of the plug block 341, and the protective door 3 is in a locked state at this time.

[0031] When the lifting platform is converted from the second state position to the first state position, the working platform 04 gradually descends, and the top rod 023 of the ladder 02 penetrates into the first sleeve 31, abuts against the rotating shaft 33 and causes the rotating shaft 33 to move upward relative to the first sleeve 31. At this time, the protective cross bar 34 fixedly connected to the rotating shaft 33 and the plug block 341 fixedly connected to the protective cross bar 34 also move upward. When the lifting platform is converted to the first state position, the plug block 341 is completely separated from the second sleeve 32, and the protective door rod 35 can rotate around the central axis of the rotating shaft 33 as the center of the circle. The protective door 3 is in an unlocked state at this time.

[0032] When the lifting platform is in the first state, the staff can climb onto the working platform 04 via the ladder 02. The staff can then rotate the protective crossbar 34 and align the plug block 341 with the second channel of the second sleeve 32. During the transition from the second state to the first state, as the working platform 04 gradually rises, the top rod 023 loses its support for the rotating shaft 33, and the rotating shaft 33 falls relative to the first sleeve, the protective crossbar 34 and the plug block 341 fall, and the plug block 341 is sleeved with the second sleeve 32, completing the locking of the protective door 3.

[0033] Preferably, Figure 7 As shown, the top of the second sleeve 32 is fixedly connected to the limiting portion 321, and the limiting portion 321 and the second sleeve 32 are integrally formed. When the protective door 3 is in the unlocked state, the limiting portion 321 can play a role in blocking the plug block 341 to prevent the protective door 3 from rotating and opening toward the outside of the working platform 04. The inward opening of the protective door 3 is more conducive to the safety of the staff. At the same time, in the process of the protective door 3 rising and locking, the limiting effect of the limiting portion 321 can facilitate the staff to align the plug block 341 with the second channel of the second sleeve 32, which helps to improve the convenience of locking the protective door 3.

[0034] Preferably, Figure 7 As shown, the insert block 341 is a cylindrical structure, and the stopper 321 is a semi-cylindrical structure. Specifically, the inner diameter of the semi-cylindrical structure of the stopper 321 is equal to the bottom diameter of the cylindrical structure of the insert block 341.

[0035] Preferably, Figure 4 As shown, the supporting base plate 1 also includes an extension portion 11 fixedly connected to one side thereof, and the extension portion 11 is arranged correspondingly with the ladder 02 up and down, and the protective door 3 is installed on the top of the extension portion 11. Specifically, two through holes are arranged on the extension portion 11, which are connected to the first channel and the second channel respectively. The arrangement of the extension portion 11 can facilitate the protective door 3 to correspond to the bottom ladder, which is convenient for the staff to climb, and at the same time expands the use space of the working platform 04, which is convenient for the staff to work.

[0036] Preferably, Figure 3 As shown, the first sleeve 31 and the second sleeve 32 are both fixedly connected with a handle 05. The handle 05 can facilitate the staff to use their strength when climbing, and ensure the safety when climbing onto the working platform 04.

[0037] Preferably, a bottom baffle 21 is fixedly connected to the guardrail 2, and the bottom end of the bottom baffle 21 abuts against the supporting bottom plate 1. The bottom baffle 21 can prevent tools or easily rolling parts on the working platform 04 from falling from the working platform 04. As a further protective measure, the bottom baffle 21 can prevent accidents caused by falling objects.

[0038] Preferably, the protective door 3 further comprises a protective door baffle 36, which is fixedly connected to the protective cross bar 34 via a plurality of protective door rods 35. The protective door rods 35 can prevent the staff from slipping and falling, and the protective door baffle 36 has the same function as the bottom baffle 21.

[0039] To sum up, in actual use, the initial state of the lifting platform is the first state, at which time the protective door 3 is unlocked. At this time, the staff can climb onto the working platform 04 via the ladder 02. During the climbing process, the staff can use the handle 05 for leverage, and after approaching the protective door 3, they can easily push the door open and climb onto the working platform 04.

[0040] After boarding the platform, the staff closes the protective door 3. Under the obstruction of the limiter 321, the insert block 341 will be located directly above the second channel of the second sleeve 32. As the scissor mechanism 03 extends, the lifting platform enters the second state. The top rod 023 gradually withdraws from the first channel inside the first sleeve 31, and the rotating shaft 33 loses support. Under the action of gravity, the rotating shaft 33, the protective cross bar 34 and the insert block 341 all descend, and the insert block 341 is inserted into the second sleeve 32, completing the locking of the protective door 3. If the working platform does not land, the protective door 3 will not open.

[0041] After the work is completed, the scissor mechanism 03 drives the working platform 04 to descend, and the top rod 023 at the top of the ladder 02 will push the rotating shaft 33 upward, and the plug block 341 will then disengage from the second sleeve 32, the protective door 3 is unlocked, and the staff can open the door and climb down the platform to complete the work.

[0042] Therefore, the lifting platform can ensure the safety of the workers through a protective mechanism with a self-locking protective door. In actual use, the workers only need to open and close the door, and do not need to manually lock or manually latch. The minimum action is used to ensure the maximum safety, which effectively avoids the situation where construction workers do not use door locks due to complicated operations, or the latch is lost, resulting in improper protection and illegal operations, effectively reducing the probability of accidents at the construction site.

[0043] 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. A high-altitude work lifting platform with a protective structure, comprising a vehicle body (01), a working platform (04), and a scissor mechanism (03) for driving the working platform (04) to rise and fall, It is characterized in that The working platform (04) comprises a supporting base plate (1) installed on the top of the scissor mechanism (03), and a protective door (3) and a guardrail (2) are installed on the top of the supporting base plate (1); The protective door (3) comprises a first sleeve (31) and a second sleeve (32) mounted on the top of the supporting base plate (1); a rotating shaft (33) is sleeved inside the first sleeve (31); a protective cross bar (34) is mounted on the top of the rotating shaft (33); an insert block (341) is mounted on the bottom of the protective cross bar (34); and the insert block (341) is sleeved inside the second sleeve (32); A ladder (02) is installed on one side of the vehicle body (01), and a push rod (023) is installed on the top of the ladder (02). When the working platform (04) descends, the push rod (023) can push the rotating shaft (33) to separate the insert block (341) from the second sleeve (32).

2. The aerial work lifting platform with a protective structure according to claim 1, It is characterized in that A first channel is provided inside the first sleeve (31), and a through hole corresponding to the first channel is provided on the supporting base plate (1). The push rod (023) can penetrate into the through hole and the first channel to push the rotating shaft (33) upward.

3. The aerial work lifting platform with a protective structure according to claim 1, It is characterized in that A limiting portion (321) is installed on the top of the second sleeve (32).

4. The aerial work lifting platform with a protective structure according to claim 3, It is characterized in that The insert block (341) is a cylindrical structure, and the limiting portion (321) is a semi-cylindrical structure.

5. The aerial work lifting platform with a protective structure according to claim 1, It is characterized in that The supporting base plate (1) further comprises an extension portion (11) fixedly connected to one side thereof, and the extension portion (11) is arranged correspondingly to the ladder (02) up and down, and the protective door (3) is mounted on the extension portion (11).

6. The aerial work lifting platform with a protective structure according to claim 1, It is characterized in that The first sleeve (31) and the second sleeve (32) are both fixedly connected with a handle (05).

7. The aerial work lifting platform with a protective structure according to claim 1, It is characterized in that A bottom baffle (21) is installed on the guardrail (2), and the bottom end of the bottom baffle (21) is in contact with the supporting bottom plate (1).

8. The aerial work lifting platform with a protective structure according to claim 1, It is characterized in that The protective door (3) further comprises a protective door baffle (36), wherein the protective door baffle (36) is mounted on the protective cross bar (34) via a plurality of protective door rods (35).

9. The aerial work lifting platform with a protective structure according to claim 1, It is characterized in that The ladder (02) comprises a side rod (021) mounted on the vehicle body (01); the top rod (023) is vertically arranged on the top of the side rod (021) and is integrally formed with the side rod (021).

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