A lifting device with protective function

Abstract

The present invention relates to the technical field of lifting devices, and in particular to a lifting device with a protective function, comprising a mobile vehicle, a scissor-type support frame, a working platform, an extension platform, a filling component and a protective cover; the mobile vehicle is connected to a scissor-type support frame; the scissor-type support frame is connected to a working platform; the working platform is slidably connected to an extension platform; the extension platform is connected to a filling component for filling the gap between the working platform and the extension platform; the mobile vehicle is provided with a protective cover for protecting the scissor-type support frame; the protective cover is made of elastic deformation material; a closed space is formed between the protective cover, the mobile vehicle and the working platform; and a one-way air inlet is provided on the protective cover. The present invention realizes shielding and protecting the scissor-type support frame through the protective cover, preventing the processed debris from falling and getting stuck in the scissor-type support frame, avoiding the scissor-type support frame from being unable to be stored and lowered normally, and ensuring the normal progress of the operation.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting devices, and in particular to a lifting device with a protective function. Background Art

[0002] Self-propelled lift, also known as aerial work platform or lifting work platform, is a mechanical device that can move by itself and provide a stable working platform for workers to work at high altitudes. It is widely used in construction, maintenance and installation and other occasions that require high-altitude work.

[0003] Some self-propelled lifts have an extendable platform on their working platforms to increase the staff's activity space so as to adapt to a larger working range. The existing self-propelled lifts use a sliding connection between the working platform and the extension platform. When the extension platform is extended from the working platform, there is a height difference between the working platform and the extension platform. The existing self-propelled lifts are unable to level the height difference between the working platform and the extension platform. When the staff raise their heads to work, they pay less attention to their feet and are easily tripped by the height difference between the working platform and the extension platform, causing the staff to fall from the working platform, posing a major safety hazard.

[0004] Furthermore, since there are no protective measures on the outside of the scissor-type support frame of the existing self-propelled lift, when the workers are performing construction or maintenance work, some waste and debris that are removed or replaced may fall onto the scissor-type support frame, causing the scissor-type support frame to be stuck with these waste and debris and unable to be stored normally, delaying subsequent processes and causing inconvenience to the passage of other equipment. Summary of the invention

[0005] In order to overcome the disadvantage that the existing self-propelled lifts cannot level the height difference between the working platform and the extension platform, which causes workers to be easily tripped and fall from the working platform, posing a major safety hazard, the present invention provides a lifting device with a protective function.

[0006] The technical solution of the present invention is: a lifting device with a protective function, comprising a mobile vehicle, a scissor-type support frame, a working platform and an extension platform; a controller is arranged on the mobile vehicle; a scissor-type support frame is connected to the mobile vehicle; a working platform is connected to the scissor-type support frame; an extension platform is slidably connected to the working platform; a filling component, a protective cover, a cleaning component and a protective system are also included; a filling component for filling the gap between the working platform and the extension platform is connected to the extension platform; a protective cover for protecting the scissor-type support frame is arranged on the mobile vehicle; the protective cover is made of elastic deformation material; a closed space is formed between the protective cover, the mobile vehicle and the working platform; a one-way air inlet is arranged on the protective cover; a cleaning component for cleaning the working platform is connected to the working platform; a protective system for adjusting the protective cover is connected to the working platform;

[0007] The filling assembly includes a movable frame, a filling block and a rotating plate; the movable frame is fixedly connected to the extension platform; a movable cavity is provided on the working platform; the movable frame is located in the movable cavity; a plurality of filling blocks for filling the gap between the working platform and the extension platform are slidably connected to the movable frame; a guide part for guiding the filling blocks is provided on the working platform; a rotating plate for intercepting impurities is rotatably connected to the working platform;

[0008] The transmission component includes a transmission pipe, an air blowing head and an air supply pipe; a plurality of air blowing heads for cleaning the working platform and the extension platform are fixedly connected to the working platform; each air blowing head is fixedly connected and connected to a transmission pipe; each transmission pipe is connected to the inside of the protective cover; a plurality of air supply pipes are fixedly connected to the working platform; each air supply pipe is connected to the inside of the protective cover; the other end of each air supply pipe is connected to the active cavity; a debris discharge port is provided on the active cavity.

[0009] More preferably, an elastic membrane is also included; an elastic membrane for blocking impurities is fixedly connected to the upper side of all the filling blocks.

[0010] More preferably, the upper side of each filling block is arranged in an inclined shape.

[0011] More preferably, a blocking plate is further included; the impurity discharge port is rotatably connected to a blocking plate for intercepting external impurities.

[0012] More preferably, the debris discharge port on the working platform is arranged on a side away from the controller.

[0013] More preferably, the protection system includes an electromagnet and a magnetic block; the electromagnet is fixedly connected to the lower side of the working platform; and the magnetic block is fixedly connected to the upper side of the protective cover.

[0014] More preferably, the protection system also includes a protection net; a protection net for enhancing the protection effect of the scissor-type support frame is fixedly connected to the lower side of the working platform; the protection net is located on the inner side of the protective cover.

[0015] More preferably, the protection system also includes a winding roller and a connecting rope; a plurality of storage chambers are opened on the mobile vehicle; a winding roller is rotatably connected in each storage chamber; each winding roller is fixedly connected to a connecting rope for reinforcing the protection net; and each connecting rope is fixedly connected to the lower side of the working platform.

[0016] Beneficial effects: The present invention realizes shielding and protecting the scissor-type support frame through the protective cover, preventing the removed and replaced waste and debris from falling and getting stuck in the scissor-type support frame, avoiding the scissor-type support frame from being unable to be normally stored and lowered, and ensuring the normal operation;

[0017] The gap between the extended platform and the working platform is filled by the filling block to prevent the workers from tripping over the gap between the working platform and the extended platform, thereby enhancing the safety of the workers' work;

[0018] The gas is transmitted to the air blowing head through the transmission pipe, and the upper side of the working platform and the extension platform are blown to blow off the impurities on the upper side of the working platform and the extension platform, thereby reducing the subsequent cleaning work of the working platform and the extension platform;

[0019] The scissor-type support frame is covered with a protective net to prevent external impurities from being blown into the scissor-type support frame. While reducing the wind-exposed area of ​​the scissor-type support frame, the blocking and interception effect of external impurities is ensured, thereby ensuring the normal progress of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the lifting device with protective function of the present invention;

[0021] Figure 2 This is a diagram showing the working platform, extension platform and protective cover of the present invention in a storage state;

[0022] Figure 3 is a cross-sectional view of the protective cover of the present invention;

[0023] Figure 4 It is a schematic diagram of the combined three-dimensional structure of the working platform, protective cover and cleaning component of the present invention;

[0024] Figure 5 It is a schematic diagram of the combined three-dimensional structure of the working platform, the extension platform and the filling component of the present invention;

[0025] Figure 6 It is a schematic diagram of the combined three-dimensional structure of the working platform and the filling component of the present invention;

[0026] Figure 7 It is a schematic diagram of the combined three-dimensional structure of the working platform, cleaning components and protection system of the present invention;

[0027] Figure 8It is a schematic diagram of the combined three-dimensional structure of the mobile vehicle and the protection system of the present invention.

[0028] Marked in the figure: 1-mobile vehicle, 1001-controller, 1002-storage chamber, 2-scissor support frame, 3-working platform, 3001-movable chamber, 3002-guide part, 3003-discharge port, 4-extension platform, 5-protective cover, 101-movable frame, 102-filling block, 103-rotating plate, 104-elastic membrane, 201-transmission pipe, 202-blowing head, 203-air transmission pipe, 204-sealing plate, 301-electromagnet, 302-magnetic block, 303-protective net, 304-winding roller, 305-connecting rope. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0030] Example 1

[0031] like Figure 1-Figure 8 As shown, a lifting device with a protective function includes a mobile vehicle 1, a scissor-type support frame 2, a working platform 3 and an extension platform 4; the mobile vehicle 1 is provided with a controller 1001; the mobile vehicle 1 is connected to the scissor-type support frame 2; the scissor-type support frame 2 is connected to the working platform 3; the extension platform 4 is slidably connected to the working platform 3;

[0032] It also includes a filling component, a protective cover 5, a cleaning component and a protection system; the filling component is connected to the extension platform 4; the mobile vehicle 1 is provided with a protective cover 5; the protective cover 5 is made of elastic deformation material; a closed space is formed between the protective cover 5, the mobile vehicle 1 and the working platform 3; a one-way air inlet is provided on the protective cover 5; the working platform 3 is connected with a cleaning component; and the working platform 3 is connected with a protection system.

[0033] The filling assembly includes a movable frame 101, a filling block 102 and a rotating plate 103; the movable frame 101 is fixedly connected to the extension platform 4; a movable cavity 3001 is opened on the working platform 3; the movable frame 101 is located in the movable cavity 3001; a plurality of filling blocks 102 are slidably connected to the movable frame 101; a guide portion 3002 is provided on the working platform 3; initially, the guide portion 3002 is directly opposite to the connection between the movable frame 101 and the extension platform 4; the rotating plate 103 is rotatably connected to the working platform 3 through a torsion spring.

[0034] An elastic membrane 104 is also included; an elastic membrane 104 is fixedly connected to the upper sides of all the filling blocks 102 .

[0035] Furthermore, in order to ensure the scraping effect of the rotating plate 103 on impurities on the elastic membrane 104, the upper side of each filling block 102 is arranged to be inclined, so that the upper sides of two adjacent filling blocks 102 on the guide part 3002 are spliced ​​to form a flat inclined surface, so that the elastic membrane 104 is in a flat state when passing through the rotating plate 103.

[0036] The transmission component includes a transmission pipe 201, a blowing head 202 and an air supply pipe 203; a plurality of blowing heads 202 are fixedly connected to the working platform 3; each blowing head 202 is fixedly connected and connected to a transmission pipe 201; each transmission pipe 201 is connected to the inside of the protective cover 5; a plurality of air supply pipes 203 are fixedly connected to the working platform 3; each air supply pipe 203 is connected to the inside of the protective cover 5; the other end of each air supply pipe 203 is connected to the active cavity 3001; a debris discharge port 3003 is provided on the active cavity 3001.

[0037] It also includes a blocking plate 204; the blocking plate 204 is rotatably connected to the impurity discharge port 3003.

[0038] Furthermore, in order to prevent the impurities blown out from the impurity discharge port 3003 from falling onto the controller 1001 , the impurity discharge port 3003 on the working platform 3 is arranged on a side away from the controller 1001 .

[0039] The present invention shields and protects the scissor-type support frame 2 through the protective cover 5. During construction or maintenance work, the problem that the scissor-type support frame 2 cannot be normally stored due to the removal and replacement of waste materials and debris stuck in the scissor-type support frame 2 is solved. The specific process is as follows:

[0040] When carrying out construction or maintenance work, the worker first goes up to the working platform 3, and then controls the mobile vehicle 1 to move to the bottom of the working position through the remote control. After reaching the designated position, the scissor support frame 2 is controlled by the remote control to drive the working platform 3 and the extension platform 4 to rise together. During the rising process of the working platform 3, the upper end of the protective cover 5 is also raised, and the protective cover 5 is stretched to be as shown in the figure. Figure 1 In the state shown, the internal volume of the protective cover 5 increases to generate negative pressure, so that the outside air enters the protective cover 5 through the one-way air inlet hole on the protective cover 5. When the required height for the operation is reached, the staff controls the scissor-type support frame 2 to stop the working platform 3 from rising, and then the construction or maintenance work can be carried out on the working area. When the remote control fails, the staff under the working platform 3 can control the scissor-type support frame 2 through the controller 1001 to raise and lower the working platform 3. During the operation, the scissor-type support frame 2 is shielded and protected by the protective cover 5 to prevent the removed and replaced waste and debris from falling and getting stuck in the scissor-type support frame 2, thereby preventing the scissor-type support frame 2 from being unable to be stored and lowered normally, thereby ensuring the normal progress of the operation.

[0041] The present invention fills the gap between the working platform 3 and the extension platform 4 by the filling block 102, so that the extension platform 4 is kept flat with the working platform 3 after being extended, and solves the problem that the workers do not pay attention to their feet when they look up at work, and are tripped by the gap between the extension platform 4 and the working platform 3, which easily leads to falling. The specific process is as follows:

[0042] When the working position exceeds the range of the working platform 3, the staff pushes the extension platform 4 backward on the working platform 3 to extend the extension platform 4 from the working platform 3, thereby increasing the staff's range of movement. When the extension platform 4 is extended, the extension platform 4 drives the movable frame 101 and the filling block 102 to extend from the movable cavity 3001 together. When the filling block 102 slides through the guide portion 3002 along with the extension platform 4, the filling block 102 is guided upward by the guide portion 3002, so that the filling block 102 slides upward on the movable frame 101 until it is flush with the extension platform 4, thereby filling the gap between the extension platform 4 and the working platform 3 after it is extended, thereby preventing the staff from being tripped by the gap between the working platform 3 and the extension platform 4, thereby enhancing the staff's working safety. At the same time, the filling block 102 can be adaptively filled according to the extended length of the extension platform 4, thereby enhancing the adaptability of the present invention.

[0043] When the filling block 102 is extended with the extension platform 4, the elastic membrane 104 moves with the filling block 102. At the same time, the rotating plate 103 loses the restriction of the extension platform 4, rotates downward under the elastic force of the torsion spring, and fits on the elastic membrane 104. The elastic membrane 104 covers the upper sides of all filling blocks 102 to prevent impurities dropped during removal and replacement operations from being stuck between two adjacent filling blocks 102, and to prevent the filling block 102 from being stuck by impurities and being unable to be stored together with the extension platform 4. While enhancing the safety of the operation, it ensures that the subsequent storage work is carried out normally. When the elastic membrane 104 covers the upper side of the filling block 102, the rotating plate 103 is attached to the upper side of the elastic membrane 104 to cover the upper area of ​​the guide part 3002 to prevent impurities dropped during removal and replacement operations from passing through The upper area of ​​the guide portion 3002 is inserted into the movable cavity 3001 to prevent the movable frame 101 from being stuck by impurities when being stored, further ensuring the normal progress of subsequent storage work. When the removal and replacement work is completed, the staff pulls the extension platform 4 back to the working platform 3, and at the same time drives the movable frame 101 and the filling block 102 to retract into the movable cavity 3001, and the elastic membrane 104 is retracted into the movable cavity 3001 together with the filling block 102. In this process, the impurities that fall onto the elastic membrane 104 are scraped backwards to the extension platform 4 through the rotating plate 103 to prevent the impurities from entering the movable cavity 3001 together with the elastic membrane 104, and to prevent the filling block 102 from being stuck by impurities when it is extended next time. When the rotating plate 103 scrapes the impurities on the elastic membrane 104, since the upper side of each filling block 102 is arranged to be inclined, as shown in FIG. Figure 6 As shown, when the filling block 102 is guided by the guide part 3002 to rise and fall, the upper sides of the two adjacent filling blocks 102 located on the guide part 3002 are spliced ​​to form a flat inclined surface, so that the elastic membrane 104 is in a flat state when passing through the rotating plate 103. Compared with the upper side being set as a horizontal plane, when it is guided by the guide part 3002, no step surface will be generated on the upper side, which is beneficial to enhance the scraping and cleaning effect of the rotating plate 103 on impurities on the elastic membrane 104.

[0044] When the removal and replacement work is completed and the extension platform 4 is pulled back to the working platform 3, the staff controls the scissor-type support frame 2 through the remote control to drive the working platform 3 to descend. During the descent of the working platform 3, the protective cover 5 is compressed, so that the compressed gas in the protective cover 5 is transmitted to the blowing head 202 through the transmission pipe 201, and the upper sides of the working platform 3 and the extension platform 4 are blown to blow off the impurities on the upper sides of the working platform 3 and the extension platform 4, thereby reducing the subsequent cleaning work of the working platform 3 and the extension platform 4. While being compressed, part of the gas is blown into the active cavity 3001 through the gas pipe 203, so that the gas pressure in the active cavity 3001 increases, and then the sealing plate 204 is pushed open, so that the active cavity 3001 is connected with the outside through the impurity discharge port 3003, and the airflow blown in from the gas pipe 203 is used to blow air on the upper side of the elastic membrane 104 received in the active cavity 3001, so that small particles of impurities adhered to the upper side of the elastic membrane 104 are blown out from the impurity discharge port 3003, and the elastic membrane 104 is further cleaned, thereby reducing the subsequent cleaning work of the staff.

[0045] Example 2

[0046] On the basis of Example 1, Figure 1-Figure 4 and Figure 7-Figure 8 As shown, the protection system includes an electromagnet 301 and a magnetic attraction block 302 ; the electromagnet 301 is fixedly connected to the lower side of the working platform 3 ; and the magnetic attraction block 302 is fixedly connected to the upper side of the protection cover 5 .

[0047] The protection system also includes a protection net 303 ; the protection net 303 is fixedly connected to the lower side of the working platform 3 ; the protection net 303 is located inside the protection cover 5 .

[0048] The protection system also includes a winding roller 304 and a connecting rope 305; two front-to-back symmetrical storage chambers 1002 are opened on the mobile vehicle 1; a winding roller 304 is rotatably connected in each storage chamber 1002; the winding roller 304 is rotated and fixedly driven by a motor; a connecting rope 305 is fixedly connected to each winding roller 304; each connecting rope 305 is fixedly connected to the lower side of the working platform 3.

[0049] When carrying out construction or maintenance work, considering the situation of strong wind, the wind receiving area of ​​the scissor support frame 2 is increased due to the covering of the protective cover 5 on the scissor support frame 2, resulting in the strengthening of the blowing force of the strong wind on the self-propelled lift, causing the scissor support frame 2 to drive the working platform 3 to shake, and the staff is prone to fall from the working platform 3. The specific solution process is as follows:

[0050] When the scissor support frame 2 drives the working platform 3 to rise, Figure 3As shown, the control motor drives the winding roller 304 to rotate, loosens the winding of the connecting rope 305, and causes the working platform 3 to drive the upper ends of the protective net 303 and the connecting rope 305 to rise together. When removing or replacing work is performed on a windy day, the staff controls the electromagnet 301 through the remote control to stop the adsorption of the magnetic block 302, so that the magnetic block 302 drives the upper end of the protective cover 5 to fall together under the action of gravity, and the protective cover 5 shrinks, preventing the wind-receiving area of ​​the scissor-type support frame 2 from increasing due to the covering of the protective cover 5, reducing the amplitude of the shaking of the working platform 3 driven by the scissor-type support frame 2, avoiding the risk of staff falling from the working platform 3, and further enhancing the safety of the operation.

[0051] When the protective cover 5 is retracted, the scissor-type support frame 2 is covered by the protective net 303 to prevent external impurities from being blown into the scissor-type support frame 2. While reducing the wind-exposed area of ​​the scissor-type support frame 2, the blocking and intercepting effect of external impurities is ensured, thereby ensuring the normal removal and replacement work.

[0052] While the protective net 303 is protecting the scissor-type support frame 2, the inner side of the protective net 303 is limited by the connecting rope 305, which is beneficial to enhancing the stability of the protective net 303 and improving the protective effect of the protective net 303 on the scissor-type support frame 2. When the subsequent working platform 3 descends, the winding roller 304 is driven by the motor to rotate, and the connecting rope 305 is put into the storage chamber 1002, so that the connecting rope 305 is always in a straight state, and the protective net 303 is limited to prevent the protective net 303 from being stuck in the scissor-type support frame 2 when the scissor-type support frame 2 drives the working platform 3 to descend. While enhancing the protective effect of the scissor-type support frame 2, it ensures that the subsequent scissor-type support frame 2 can perform normal storage work.

[0053] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A lifting device with a protective function, comprising a mobile vehicle (1), a scissor-type support frame (2), a working platform (3) and an extension platform (4); the mobile vehicle (1) is provided with a controller (1001); the mobile vehicle (1) is connected to the scissor-type support frame (2); the scissor-type support frame (2) is connected to the working platform (3); the extension platform (4) is slidably connected to the working platform (3); the characteristics are: The device also comprises a filling component, a protective cover (5), a cleaning component and a protection system; the extension platform (4) is connected to a filling component for filling a gap between the working platform (3) and the extension platform (4); the mobile vehicle (1) is provided with a protective cover (5) for protecting the scissor-type support frame (2); the protective cover (5) is made of an elastic deformable material; a closed space is formed between the protective cover (5), the mobile vehicle (1) and the working platform (3); a one-way air inlet is provided on the protective cover (5); the working platform (3) is connected to a cleaning component for cleaning the working platform (3); and the working platform (3) is connected to a protection system for adjusting the protective cover (5); The filling component comprises a movable frame (101), a filling block (102) and a rotating plate (103); the movable frame (101) is fixedly connected to the extension platform (4); a movable cavity (3001) is provided on the working platform (3); the movable frame (101) is located in the movable cavity (3001); a plurality of filling blocks (102) for filling the gap between the working platform (3) and the extension platform (4) are slidably connected to the movable frame (101); a guide portion (3002) for guiding the filling blocks (102) is provided on the working platform (3); and a rotating plate (103) for intercepting impurities is rotatably connected to the working platform (3); The transmission component comprises a transmission pipe (201), an air blowing head (202) and an air delivery pipe (203); a plurality of air blowing heads (202) for cleaning the working platform (3) and the extension platform (4) are fixedly connected to the working platform (3); each air blowing head (202) is fixedly connected to and connected with a transmission pipe (201); each transmission pipe (201) is connected with the inside of the protective cover (5); a plurality of air delivery pipes (203) are fixedly connected to the working platform (3); each air delivery pipe (203) is connected with the inside of the protective cover (5); the other end of each air delivery pipe (203) is connected with the active cavity (3001); and a debris discharge port (3003) is provided on the active cavity (3001); The protection system comprises an electromagnet (301) and a magnetic attraction block (302); the electromagnet (301) is fixedly connected to the lower side of the working platform (3); and the magnetic attraction block (302) is fixedly connected to the upper side of the protection cover (5); The protection system further comprises a protection net (303); the protection net (303) for enhancing the protection effect on the scissor-type support frame (2) is fixedly connected to the lower side of the working platform (3); and the protection net (303) is located on the inner side of the protection cover (5).

2. A lifting device with protective function according to claim 1, characterized in that: It also includes an elastic membrane (104); an elastic membrane (104) for blocking impurities is fixedly connected to the upper side of all the filling blocks (102).

3. A lifting device with protective function according to claim 2, characterized in that: The upper side of each filling block (102) is arranged in an inclined shape.

4. The lifting device with protective function according to claim 1, characterized in that: It also includes a blocking plate (204); the impurity discharge port (3003) is rotatably connected to a blocking plate (204) for intercepting external impurities.

5. A lifting device with protective function according to claim 4, characterized in that: The debris discharge port (3003) on the working platform (3) is arranged on a side away from the controller (1001).

6. The lifting device with protective function according to claim 1, characterized in that: The protection system further comprises a winding roller (304) and a connecting rope (305); a plurality of storage chambers (1002) are provided on the mobile vehicle (1); a winding roller (304) is rotatably connected in each storage chamber (1002); a connecting rope (305) for reinforcing the protection net (303) is fixedly connected to each winding roller (304); and each connecting rope (305) is fixedly connected to the lower side of the working platform (3).

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