Sleeve type aerial work platform

Abstract

The utility model relates to a sleeve type aerial work platform which comprises a movable base, a fixed sleeve is installed at the upper end of the movable base, a first square bearing seat is installed at the upper end of the fixed sleeve, a servo gear motor is installed in the movable base, the output end of the servo gear motor is connected with a first threaded shaft, and the first threaded shaft upwards extends into the fixed sleeve. A connecting structure is connected to the surface of the first threaded shaft in the fixed sleeve, a first movable sleeve is connected to the outer side of the connecting structure, a first square bearing seat is installed at the upper end of the first movable sleeve, a second square bearing seat is installed at the bottom of the inner side of the first movable sleeve, and a second threaded shaft is arranged in the fixed sleeve; the upper end of the second threaded shaft is connected with the first square bearing seat inner ring, and the lower end is connected with the second square bearing seat inner ring. The sleeve type aerial work platform solves the problems that potential safety hazards exist in an existing sleeve type aerial work platform, and it cannot be safely guaranteed that the driving piece cannot be damaged to cause falling of the platform in the operation process.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting work platforms, in particular to a telescopic aerial work platform. Background Art

[0002] Telescopic aerial work platform is a special type of aerial work equipment, which is mainly used to lift and support workers, tools and materials to a specified height in order to carry out various aerial operations. The existing telescopic work platform is generally driven by electric push rods or hydraulic cylinders to achieve lifting and moving, such as patent CN103112809A, an aluminum alloy kneeling column lift vehicle Figure 4 It can be seen that the main implementation method can be found in paragraph

[0019] of the specification of the patent document. Although this method seems relatively simple and easy to manufacture, it has a problem. The bearing capacity of the chain is limited. Secondly, it cannot guarantee that the electric push rod will always operate reliably during operation. If the electric push rod is damaged, the platform will fall down instantly, causing serious safety accidents such as injuries to construction workers and endangering their lives.

[0003] Therefore, in order to solve such problems, the above patent points out that this can be achieved by selecting a large-stroke, high-power electric push rod or increasing the number of aluminum alloy masts. In order to improve the stability of the working bucket when the vehicle is in use, multiple aluminum alloy mast-type lifting mechanisms can also be installed; selecting a large-stroke, high-power electric push rod can also increase the working load of the working bucket, and the electric push rod has a self-locking function. When the motor stops rotating, the push rod immediately stays in a certain position, so that the platform remains at the set height for high-altitude operations. However, the self-locking function of the electric push rod is not foolproof. First of all, it should be understood that the self-locking function of the electric push rod depends on the electromagnet in the control box. When the power is turned off, the electromagnet will automatically attract and lock the push rod. However, the electromagnet may not work properly due to damage or poor contact, resulting in the failure of the self-locking function, so there is still a risk.

[0004] Therefore, in order to prevent the driving parts from being damaged suddenly during operation, to protect the lives of construction workers and to improve the overall safety of the telescopic aerial work platform, a telescopic aerial work platform is proposed to overcome the technical deficiencies of patent CN103112809A, an aluminum alloy kneeling column lift. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a telescopic aerial work platform, which solves the safety hazard of the existing telescopic aerial work platform and the problem that the driving parts cannot be effectively and safely protected from being damaged and causing the platform to fall during operation.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sleeve-type aerial work platform, comprising a mobile base, a fixed sleeve installed on the upper end of the mobile base, a first square bearing seat installed on the upper end of the fixed sleeve, a servo reduction motor installed in the mobile base, the output end of the servo reduction motor is connected to a first threaded shaft, the first threaded shaft extends upward into the fixed sleeve, a connecting structure is connected on the surface of the first threaded shaft in the fixed sleeve, a first movable sleeve is connected to the outside of the connecting structure, a first square bearing seat is installed on the upper end of the first movable sleeve and a second square bearing seat is installed on the bottom inside the first movable sleeve, a second threaded shaft is arranged in the fixed sleeve, the upper end of the second threaded shaft is connected to the inner ring of the first square bearing seat, the lower end of the second threaded shaft is connected to the inner ring of the second square bearing seat, a connecting structure is also provided on the surface of the second threaded shaft, the two sets of connecting structures are driven by a chain, the connecting structure on the surface of the second threaded shaft can drive the second threaded shaft to rotate, the surfaces of the first threaded shaft and the second threaded shaft are both provided with openings, a second movable sleeve is installed on the outer end of the connecting structure on the surface of the second threaded shaft, and a work table is installed on the outside of the second movable sleeve.

[0007] Through the above technical solution, further, the connecting structure includes two groups of connecting plates arranged on the surface of the first threaded shaft, the right side of the connecting plate is connected to the first movable sleeve, and a third-party bearing seat is installed on the surface of the connecting plate on the opposite side, and a threaded sleeve is installed on the inner ring of the third-party bearing seat. A pin shaft passes through the threaded sleeve, and the pin shaft passes through the opening located on the surface of the first threaded shaft. A sprocket is installed on the surface of the threaded sleeve, and a chain is sleeved on the surface of the sprocket and connected to the connecting structure located on the surface of the second threaded shaft.

[0008] Furthermore, the connecting plate extends into the fixed sleeve, and auxiliary movable wheels are installed on the front and rear sides of the connecting plate, and a protective plate is installed on the upper end of the connecting plate located on the lower side of the first threaded shaft surface.

[0009] As a preferred technical solution, the protective plate includes a mounting base plate, a bottom plate, and side plates. The mounting base plate is mounted on the upper end of the connecting plate, and the bottom plate is mounted on the upper end of the mounting base plate, and the side plates are symmetrically mounted on the upper end of the bottom plate.

[0010] Furthermore, both ends of the bottom plate and the side plates are bent.

[0011] As a preferred technical solution, a slide rail slider is installed on the right side of the fixed sleeve, and the outer end of the slide rail slider is connected to the first movable sleeve. A slide rail slider is installed on the right side of the first movable sleeve, and the outer end of the slide rail slider is connected to the second movable sleeve. The right end of the fixed sleeve and the right end of the first movable sleeve are both provided with openings. The slide rail slider consists of a slide rail and a slider. The slide rail is installed on the right side of the fixed sleeve and the first movable sleeve, and the slider is installed on the left side of the first movable sleeve and the second movable sleeve. The length of the slide rail and the slider is consistent with the length of the fixed sleeve, and the slider moves on the surface of the slide rail.

[0012] Furthermore, support rods are symmetrically installed on the upper end of the movable base, and rubber pads are installed on the upper ends of the support rods.

[0013] As a preferred technical solution, the width of the opening on the surface of the first threaded shaft is consistent with the diameter of the latch shaft.

[0014] Compared with the existing technology, the utility model provides a telescopic aerial work platform with the following beneficial effects:

[0015] 1. First of all, this work platform adopts a servo reduction motor to drive the rotation of the threaded shaft, thereby realizing the lifting and lowering of the table top. Even if the servo reduction motor is damaged, the threaded shaft will not rotate due to the damage of the servo reduction motor, and the fixed sleeve and the first movable sleeve and the first movable sleeve and the second movable sleeve all adopt a threaded transmission method; secondly, this aerial work platform is different from the existing lifting method. This lifting work platform adopts a threaded linkage method. The difference between this method and the existing linkage through a chain is that this threaded linkage method is more stable, can carry heavier loads, and there is no need to worry about the possibility of falling. Therefore, through the above explanation, this aerial work platform solves the safety hazard of the existing sleeve-type aerial work platform, and cannot effectively and safely ensure that the driving parts will not cause the platform to fall due to damage during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a telescopic aerial work platform of the utility model;

[0017] Figure 2 This utility model is a telescopic aerial work platform Figure 1 A local enlarged structural diagram of point A;

[0018] Figure 3 This utility model is a telescopic aerial work platform Figure 1 AA cross-sectional structural diagram;

[0019] Figure 4 This utility model is a telescopic aerial work platform Figure 3 A schematic diagram of the partially enlarged structure at point B;

[0020] Figure 5 This is a schematic diagram of the installation position of a threaded sleeve structure of a sleeve-type aerial work platform of the utility model;

[0021] Figure 6 This utility model is a telescopic aerial work platform Figure 3 A schematic diagram of the partially enlarged structure at point C;

[0022] Figure 7 The utility model is a schematic diagram of the structure of a sleeve-type aerial work platform protective plate.

[0023] In the figure: 1. Mobile base; 2. Servo reduction motor; 3. Support rod; 4. Fixed sleeve; 5. First movable sleeve; 6. Second movable sleeve; 7. First square bearing seat; 8. Work table; 9. First threaded shaft; 10. Second square bearing seat; 11. Second threaded shaft; 12. Connecting plate; 13. Auxiliary movable wheel; 14. Sprocket; 15. Chain; 16. Third square bearing seat; 17. Threaded sleeve; 18. Latch shaft; 19. Slide rail; 20. Protective plate; 2001. Mounting base plate; 2002. Base plate; 2003. Side plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example

[0026] See also Figure 1-7The utility model provides the following technical solutions: a sleeve-type aerial work platform, including a mobile base 1, a fixed sleeve 4 is installed on the upper end of the mobile base 1, a first square bearing seat 7 is installed on the upper end of the fixed sleeve 4, a servo reduction motor 2 is installed in the mobile base 1, the output end of the servo reduction motor 2 is connected to a first threaded shaft 9, the first threaded shaft 9 extends upward into the fixed sleeve 4, a connecting structure is connected on the surface of the first threaded shaft 9 in the fixed sleeve 4, a first movable sleeve 5 is connected to the outside of the connecting structure, a first square bearing seat 7 is installed on the upper end of the first movable sleeve 5, and a second square bearing seat 7 is installed on the bottom of the inner side of the first movable sleeve 5. shaped bearing seat 10, a second threaded shaft 11 is arranged in the fixed sleeve 4, the upper end of the second threaded shaft 11 is connected to the inner ring of the first square bearing seat 7, and the lower end of the second threaded shaft 11 is connected to the inner ring of the second square bearing seat 10. A connecting structure is also provided on the surface of the second threaded shaft 11. The two sets of connecting structures are driven by a chain 15. The connecting structure on the surface of the second threaded shaft 11 can drive the second threaded shaft 11 to rotate. Openings are provided on the surfaces of the first threaded shaft 9 and the second threaded shaft 11. The outer end of the connecting structure on the surface of the second threaded shaft 11 is installed with a second movable sleeve 6, and the outside of the second movable sleeve 6 is installed with a work table 8.

[0027] In this embodiment, the specific working principle is: the aerial work platform mainly drives the first threaded shaft 9 to rotate through the servo reduction motor 2. Figure 2 It can be seen that the connecting structure located in the fixed sleeve 4 begins to move upward, and through the action of the chain 15, the connecting structure located in the first movable sleeve 5 drives the second threaded shaft 11 to rotate, and then when the second threaded shaft 11 rotates, it drives the connecting structure in the first movable sleeve 5 to move upward, and then drives the second movable sleeve 6 to move upward, thereby driving the work table 8 to move upward. It should be noted that the structures of the two sets of connecting structures are exactly the same, and if the servo reduction motor 2 is damaged, it will not cause the threaded shaft to rotate, that is, the work table 8 will not fall downward due to damage to the driving component. Secondly, The lifting relationship between the second movable sleeve 6 and the first movable sleeve 5 is achieved by the rotation of the threaded shaft. Secondly, the lifting relationship between the first movable sleeve 5 and the fixed sleeve 4 is also achieved by the rotation of the threaded shaft. Secondly, when the first movable sleeve 5 is lifted or lowered, the second movable sleeve 6 will also start to lift or lower, thereby improving the safety of the work platform. The adopted connection structure has the characteristic of high stability compared with the existing work platform that is lifted or lowered by a chain. Therefore, the above method solves the safety hazard of the existing sleeve-type aerial work platform and the problem that the driving parts cannot be effectively and safely protected during operation from being damaged and causing the platform to fall.

[0028] According to the above, how the connecting structure drives another set of connecting structures to realize the rotation of the second threaded shaft 11 when the first threaded shaft 9 rotates through the chain 15 can be found in detail. Figure 2 and Figure 5 It can be seen that the connecting structure includes two groups of connecting plates 12 arranged on the surface of the first threaded shaft 9, the right side of the connecting plate 12 is connected to the first movable sleeve 5, and a third-party shaped bearing seat 16 is installed on the surface of the connecting plate 12 on the opposite side. A threaded sleeve 17 is installed on the inner ring of the third-party shaped bearing seat 16, and a latch shaft 18 is passed through the threaded sleeve 17. The latch shaft 18 passes through the opening on the surface of the first threaded shaft 9, and a sprocket 14 is installed on the surface of the threaded sleeve 17. A chain 15 is sleeved on the surface of the sprocket 14 and is connected to the connecting structure on the surface of the second threaded shaft 11. When the servo reduction motor 2 drives the first threaded shaft 9 to rotate, its connecting plate 12 is moved upward by the threaded cooperation relationship with the first threaded shaft 9. At this time, due to the action of the threaded sleeve 17, the threaded sleeve 17 is inserted The pin shaft 18 rotates along with the rotation of the first threaded shaft 9, and in order to facilitate the rotation of the threaded sleeve 17, a third-party bearing seat 16 is installed on the surface of the opposite side connecting plate 12, and then through the action of the chain 15, the chain 15 is put on the sprocket 14 on the surface of the threaded sleeve 17 on the surface of the second threaded shaft 11, thereby driving the threaded sleeve 17 on the surface of the second threaded shaft 11 to rotate. Due to the action of the pin shaft 18, the second threaded shaft 11 is driven to rotate, and when the first threaded shaft 9 rotates, the second threaded shaft 11 will also rotate, thereby driving the connecting plate 12 on the surface of the second threaded shaft 11 to move upward, thereby driving the second movable sleeve 6 to move upward. It should be noted that the threaded sleeve 17 and the first threaded shaft 9 do not have a matching relationship.

[0029] In order to increase the stability of the connecting plate 12 during the movement, please refer to Figure 2 It can be seen that the connecting plate 12 extends into the fixed sleeve 4, and auxiliary movable wheels 13 are installed on the front and rear sides of the connecting plate 12. In order to prevent the chain 15 from dragging, a protective plate 20 is symmetrically installed on the upper end of the connecting plate 12 located on the lower side of the surface of the first threaded shaft 9.

[0030] In order to prevent the chain 15 from dragging, please refer to Figure 2 It can be seen that the protective plate 20 includes an installation base plate 2001, a base plate 2002, and a side plate 2003. The installation base plate 2001 is installed on the upper end of the connecting plate 12, and the base plate 2002 is installed on the upper end of the installation base plate 2001. The side plates 2003 are symmetrically installed on the upper end of the base plate 2002. The lower end of the chain 15 will be contacted by the surface of the base plate 2002, and the front and rear side surfaces of the chain 15 will be contacted by the surface of the side plates 2003, thereby preventing the chain 15 from being dragged.

[0031] According to the above, in order to prevent the chain 15 and the bottom plate 2002 and the side plate 2003 from being stuck, please refer to Figure 7 It can be seen that both ends of the bottom plate 2002 and the side plate 2003 are bent, so that the chain 15 will not get stuck when it contacts the bottom plate 2003 or the side plate 2003.

[0032] In order to facilitate the stability of the movable sleeve when lifting and lowering, please refer to Figure 6 It can be seen that a slide rail slider 19 is installed on the right side of the fixed sleeve 4, and the outer end of the slide rail slider 19 is connected to the first movable sleeve 5. A slide rail slider 19 is installed on the right side of the first movable sleeve 5, and the outer end of the slide rail slider 19 is connected to the second movable sleeve 6. The right end of the fixed sleeve 4 and the right end of the first movable sleeve 5 are both provided with openings. The slide rail slider 19 consists of a slide rail and a slider. The slide rail is installed on the right side of the fixed sleeve 4 and the first movable sleeve 5, and the slider is installed on the left side of the first movable sleeve 5 and the second movable sleeve 6. The length of the slide rail and the slider is consistent with the length of the fixed sleeve 4, and the slider moves on the surface of the slide rail. In this way, the stability of the first movable sleeve 5 and the second movable sleeve 6 can be achieved during lifting.

[0033] In order to support the work surface 8, please refer to Figure 1 It can be seen that the support rods 3 are symmetrically installed on the upper end of the mobile base 1, and the rubber pads are installed on the upper ends of the support rods 3.

[0034] It should also be noted that in order to ensure that the latch shaft 18 can better rotate simultaneously with the threaded sleeve 17 when the first threaded shaft 9 rotates, the width of the opening on the surface of the first threaded shaft 9 is consistent with the diameter of the latch shaft 18. This can prevent the latch shaft 18 from being too small in diameter and causing the threaded sleeve 17 to be unable to rotate immediately when the first threaded shaft 9 rotates, thereby affecting the linkage relationship between the first threaded shaft 9 and the second threaded shaft 11.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A telescopic aerial work platform, comprising a mobile base (1), a fixed sleeve (4) being mounted on the upper end of the mobile base (1), a first square bearing seat (7) being mounted on the upper end of the fixed sleeve (4), a servo reduction motor (2) being mounted in the mobile base (1), a first threaded shaft (9) being connected to the output end of the servo reduction motor (2), and the first threaded shaft (9) extending upward into the fixed sleeve (4), characterized in that: A connecting structure is connected on the surface of the first threaded shaft (9) in the fixed sleeve (4), and a first movable sleeve (5) is connected to the outside of the connecting structure. A first square bearing seat (7) is installed on the upper end of the first movable sleeve (5) and a second square bearing seat (10) is installed on the bottom of the inner side of the first movable sleeve (5). A second threaded shaft (11) is arranged in the fixed sleeve (4), the upper end of the second threaded shaft (11) is connected to the inner ring of the first square bearing seat (7), and the lower end of the second threaded shaft (11) is connected to the inner ring of the second square bearing seat (10). A connecting structure is also provided on the surface of the second threaded shaft (11). The two sets of connecting structures are driven by a chain (15). The connecting structure on the surface of the second threaded shaft (11) can drive the second threaded shaft (11) to rotate. The surfaces of the first threaded shaft (9) and the second threaded shaft (11) are both provided with openings. A second movable sleeve (6) is installed on the outer end of the connecting structure on the surface of the second threaded shaft (11), and a working table (8) is installed on the outer side of the second movable sleeve (6).

2. The telescopic aerial work platform according to claim 1, characterized in that: The connection structure includes two groups of connection plates (12) arranged on the surface of the first threaded shaft (9), the right side of the connection plate (12) is connected to the first movable sleeve (5), and the surface of the opposite side connection plate (12) is installed with a third-party shaped bearing seat (16), the inner ring of the third-party shaped bearing seat (16) is installed with a threaded sleeve (17), and a pin shaft (18) passes through the threaded sleeve (17), and the pin shaft (18) passes through an opening located on the surface of the first threaded shaft (9). A sprocket (14) is installed on the surface of the threaded sleeve (17), and a chain (15) is sleeved on the surface of the sprocket (14) and connected to the connection structure located on the surface of the second threaded shaft (11).

3. The telescopic aerial work platform according to claim 2, characterized in that: The connecting plate (12) extends into the fixed sleeve (4), and auxiliary movable wheels (13) are installed on the front and rear sides of the connecting plate (12), and a protective plate (20) is installed on the upper end of the connecting plate (12) located on the lower side of the surface of the first threaded shaft (9).

4. The telescopic aerial work platform according to claim 3, characterized in that: The protective plate (20) comprises a mounting base plate (2001), a bottom plate (2002), and side plates (2003), wherein the mounting base plate (2001) is mounted on the upper end of the connecting plate (12), the bottom plate (2002) is mounted on the upper end of the mounting base plate (2001), and the side plates (2003) are symmetrically mounted on the upper end of the bottom plate (2002).

5. The telescopic aerial work platform according to claim 4, characterized in that: Both ends of the bottom plate (2002) and the side plate (2003) are bent.

6. The telescopic aerial work platform according to claim 1, characterized in that: A slide block (19) is installed on the right side of the fixed sleeve (4), and the outer end of the slide block (19) is connected to the first movable sleeve (5). A slide block (19) is installed on the right side of the first movable sleeve (5), and the outer end of the slide block (19) is connected to the second movable sleeve (6). The right end of the fixed sleeve (4) and the right end of the first movable sleeve (5) are both provided with openings. The slide block (19) consists of a slide rail and a slider. The slide rail is installed on the right side of the fixed sleeve (4) and the first movable sleeve (5), and the slider is installed on the left side of the first movable sleeve (5) and the second movable sleeve (6). The length of the slide rail and the slider is consistent with the length of the fixed sleeve (4), and the slider moves on the surface of the slide rail.

7. The telescopic aerial work platform according to claim 1, characterized in that: A support rod (3) is symmetrically mounted on the upper end of the mobile base (1), and a rubber pad is mounted on the upper end of the support rod (3).

8. The telescopic aerial work platform according to claim 1, characterized in that: The width of the opening on the surface of the first threaded shaft (9) is consistent with the diameter of the latch shaft (18).

Images