A plastering lifting platform suitable for construction projects

Abstract

The present invention relates to a plastering lifting platform suitable for construction engineering, comprising a load-bearing base, and a mounting platform is slidably connected to the upper end of the load-bearing base. A lifting mechanism is arranged at the upper end of the mounting platform. In addition, the upper end of the load-bearing base is movably connected to a working platform through an auxiliary support mechanism, and an operator stands on the working platform. At the same time, the working platform can only perform linear motion up and down relative to the load-bearing base. Therefore, in actual application, the device can adjust the position of the lifting mechanism by sliding the mounting platform. At this time, in conjunction with the one-way locking mechanism and the two-way locking mechanism arranged on the auxiliary support mechanism, the device can not only adjust and control the height of the working platform, but also release the lifting mechanism to ensure that it continues to play a role effectively during the operation process, thereby helping to expand the working surface or transport materials for the second time.

Description

Technical Field

[0001] The invention relates to the technical field of lifting platforms, and in particular to a plastering lifting platform suitable for construction engineering. Background Art

[0002] Architecture, as a general term for buildings and structures, is an artificial environment created by humans to meet the needs of social life, using material and technological means and combining scientific laws and aesthetic principles.

[0003] With the evolution of the times and the development of society, building materials and technologies are constantly updated. At present, concrete brickwork has become the main material for building buildings. At the same time, in order to enhance the aesthetics and practicality, modern buildings usually evenly apply cement mortar on the wall surface after completing the foundation masonry, commonly known as plastering. In actual construction, plastering construction at higher positions often requires the use of scaffolding.

[0004] In actual applications, the existing single lifting mechanism scaffolding either needs to be additionally configured with a pull rope to manually pull the newly made secondary materials to the working platform; or the working platform needs to be lifted and lowered multiple times to place the newly made secondary materials on the upper end of the working platform to achieve synchronous rise with the working platform.

[0005] In construction practice, we have observed that whether it is manual lifting or lifting the work platform, it will cause the operator to shake, and the change of the operator's center of gravity during the shaking process may cause safety risks. In addition, manual lifting or lifting the work platform requires the operator to operate alone, which not only consumes operation time, but also slows down the progress of the project.

[0006] In view of this, we proposed a new type of plastering lifting platform suitable for construction engineering, which does not require the participation of operators and is only equipped with a single lifting mechanism. Summary of the invention

[0007] In view of the defects existing in the prior art, the present invention proposes a plastering lifting platform suitable for construction engineering. The platform has the characteristic of not requiring direct participation of operators, thereby significantly improving the work efficiency of operators and effectively reducing the risks during operation. The invention solves the problem that the operation of the lifting platform in the prior art requires the participation of operators, which not only saves valuable operation time, but also reduces the potential safety hazards caused by changes in the center of gravity of the operator.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A plastering lifting platform suitable for construction engineering comprises a load-bearing base, a lifting mechanism is arranged on the upper end of the load-bearing base, a working platform is arranged on the upper end of the lifting mechanism, auxiliary support mechanisms are respectively arranged on the front and rear sides of the upper end of the load-bearing base, the upper and lower ends of the auxiliary support mechanisms are respectively movably connected with the load-bearing base and the working platform, and the upper end of the load-bearing base is slidably connected with a mounting platform, the mounting platform is fixedly connected with the lifting mechanism, each of the auxiliary support mechanisms comprises a positioning plate, the left and right ends of the positioning plate are respectively slidably connected with a follower rod, and the upper and lower ends of each of the follower rods are respectively rotatably connected with a driven Rod, multiple follower rods on the left and right sides of a single auxiliary support mechanism are symmetrically arranged, a two-way locking mechanism is arranged between each positioning plate and the working platform, a one-way locking mechanism is arranged between each positioning plate and the load-bearing base, a roller slide is arranged on the front and rear sides of each mounting platform, the mounting platform is slidably connected to the load-bearing base through the roller slide, and the mounting platform can be moved to a position where its vertical plane projection and the vertical plane projection of the working platform are completely non-overlapping through the roller slide, a contact plate is fixedly connected to the upper end of the lifting mechanism, and the angle between the upper end surface of the contact plate and the horizontal plane is equal to zero.

[0010] Preferably, each of the two-way locking mechanisms includes an upper and lower axial positioning shaft, and a plurality of limit blocks are arranged in parallel from top to bottom on the outer end of the positioning shaft, and the plurality of limit blocks are fixedly connected to the positioning shaft. A positioning ring is sleeved on the outer side of each positioning shaft, and the positioning ring is fixedly connected to the corresponding positioning plate. In addition, a through groove is opened on each positioning ring from top to bottom for the limit block, and a limit groove is opened on the inner side of each positioning ring, and the outer diameter length of the limit groove is equal to the distance between the outer end of the limit block and the central axis of the positioning shaft.

[0011] Preferably, the one-way locking mechanism includes a rack fixedly connected to the positioning plate, a follower gear is provided on one side of each rack, and each follower gear is meshingly connected to the corresponding rack, a ratchet locking component is provided on one side of each follower gear, and each one-way locking mechanism includes a mounting plate, which is movably connected to the corresponding follower gear and the ratchet locking component.

[0012] Preferably, each of the ratchet locking members comprises a driven gear, which is meshed and transmission-connected with the corresponding follower gear, and a pawl is meshedly provided on the upper side of each driven gear, and each pawl is rotationally connected to the corresponding mounting plate via a mounting shaft.

[0013] Preferably, four supporting rollers arranged in a rectangular array are provided at the lower end of the load-bearing base, an auxiliary roller is fixedly connected to the left side of the lower end of the mounting platform, and the lower end surface of the supporting roller and the lower end surface of the auxiliary roller are in the same horizontal plane, and an avoidance groove is opened up and down at the lower end of the load-bearing base for the auxiliary roller. When the auxiliary roller is located inside the avoidance groove, the projection of the mounting platform on the vertical plane coincides with the projection of the working platform on the vertical plane.

[0014] Preferably, each of the support rollers is consistent with each of the auxiliary rollers in structure, and both the support rollers and the auxiliary rollers have a self-locking structure. An auxiliary rod is slidably connected to the right side of each mounting platform, and a compression spring is sleeved on the outside of the auxiliary rod. In addition, a limiting ring is fixedly connected to the outside of the auxiliary rod, and the limiting ring is located below the compression spring. One axial end of the compression spring abuts against the mounting platform, and the other axial end of the compression spring abuts against the limiting ring. Positioning holes are provided through the upper and lower parts of the load-bearing base for the auxiliary rods. When the auxiliary rods are inserted into the positioning holes, the projection of the mounting platform on the vertical plane completely overlaps with the projection of the working platform on the vertical plane.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention ensures that the working platform can only move linearly relative to the load-bearing base in the vertical direction by slidingly connecting the mounting platform with the load-bearing base and introducing an auxiliary support mechanism. The design allows the position of the lifting mechanism to be adjusted by sliding, thereby releasing the lifting mechanism when necessary to avoid it being idle during use, so that the device can realize secondary conveying of materials, thereby improving the technical performance of the overall equipment.

[0017] The present invention designs an auxiliary support mechanism, which is composed of a positioning plate, a follower rod and a driven rod. The mechanism can not only impose position restrictions on the working platform to ensure that it can only perform vertical linear motion on the load-bearing base, but also through this design, the folded volume of the auxiliary support mechanism can be significantly reduced. Therefore, the device occupies less space in the folded state and is more suitable for the environmental requirements of actual indoor painting operations.

[0018] The design of the present invention includes a two-way locking mechanism and a one-way locking mechanism, which realizes the flexibility of position adjustment of the working platform under different working surface conditions. At the same time, the design fully considers the installation convenience of the operator during the actual operation process, ensuring that any operation of the working platform requires the operator's explicit authorization, thereby effectively preventing on-site safety accidents caused by negligent operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2It is a schematic diagram of the connection between the mounting platform and the lifting mechanism of the present invention.

[0021] Figure 3 It is a schematic diagram of the matching relationship between the load-bearing base and the working platform of the present invention.

[0022] Figure 4 It is a schematic diagram of the connection between the working platform and the positioning shaft of the present invention.

[0023] Figure 5 It is a schematic diagram of the connection between the positioning plate and the positioning ring of the present invention.

[0024] Figure 6 It is a schematic diagram of the overall structure of the support roller of the present invention.

[0025] Figure 7 It is a schematic diagram of the folded state of the present invention.

[0026] In the figure: 1. contact plate; 2. mounting table; 3. roller slide rail; 4. two-way locking mechanism; 401. positioning shaft; 402. limit block; 403. positioning ring; 404. through groove; 405. limit groove; 5. load-bearing base; 6. working platform; 7. one-way locking mechanism; 701. rack; 702. follower gear; 703. driven gear; 704. ratchet; 705. mounting shaft; 706. mounting plate; 8. auxiliary supporting mechanism; 801. driven rod; 802. follower rod; 803. positioning plate; 9. lifting mechanism; 10. auxiliary roller; 11. supporting roller; 12. avoidance groove; 13. auxiliary rod; 14. compression spring; 15. limit ring; 16. positioning hole. DETAILED DESCRIPTION

[0027] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] See also Figure 1 , Figure 2, shown is a plastering lifting platform suitable for construction engineering. The platform is consistent with the existing technical device in structure, and comprises a load-bearing base 5. Four supporting rollers 11 are arranged in a rectangular array at the bottom of the load-bearing base 5 to facilitate the movement of the entire platform.

[0030] A lifting mechanism 9 is installed on the top of the load-bearing base 5, and a working platform 6 is fixed above the lifting mechanism 9. This design enables the platform to realize vertical up and down linear motion of the working platform 6 through the lifting mechanism 9. In actual operation, the operator can stand on the working platform 6.

[0031] Compared with the prior art devices, the innovation of this device lies in that a mounting platform 2 is slidably connected to the upper end of the load-bearing base 5, and is fixedly connected to the mounting platform 2 by constraining the lifting mechanism 9, while the upper end of the lifting mechanism 9 is not connected to the working platform 6, thereby realizing the separation between the lifting mechanism 9 and the working platform 6.

[0032] In the initial state, the device can drive the working platform 6 to move upward to a suitable position through the lifting mechanism 9, and the operator can start working on the working platform 6. At the same time, before starting the operation, the initial material can be placed on the working platform 6 with the operator and lifted together with the operator. However, after a period of operation, in order to replenish materials, the device can change the position of the lifting mechanism 9 through the sliding mounting table 2. At this time, if the height and position of the working platform 6 are fixed, the lifting mechanism 9 can be used to carry new materials and lift them again. At this time, the technical effect of replenishing fresh materials can be achieved.

[0033] Furthermore, the upper end of the lifting mechanism 9 is fixedly connected to the contact plate 1, and the upper end surface of the contact plate 1 forms a zero angle with the horizontal plane. Such a design ensures the stability of the connection between the lifting mechanism 9 and the working platform 6, and guarantees the horizontal stability and reliability of the working platform 6 during use.

[0034] Specifically, in order to ensure the stability of the position of the working platform 6, the present device is designed with four supporting rollers 11 at the lower end of the bearing base 5, each of which is equipped with a self-locking mechanism. The self-locking mechanism can effectively fix the position of the bearing base 5. Furthermore, by limiting the bearing base 5 and the working platform 6 to always remain in the same vertical plane, the self-locking function of the supporting rollers 11 is used to simultaneously limit the position of the working platform 6.

[0035] like Figure 6 As shown, a pad that can move up and down is provided on one side of each support roller 11, and the pad is ensured to be highly stable by a threaded structure. When the pad moves downward to a height lower than the lower side of the corresponding support wheel, the self-locking function of the support roller 11 can be achieved.

[0036] Specifically, if Figure 3 As shown, in order to ensure that the load-bearing base 5 and the working platform 6 are always kept in the same vertical plane, the device is provided with auxiliary support mechanisms 8 on both sides of the upper end of the load-bearing base 5. The upper and lower ends of these auxiliary support mechanisms 8 are movably connected with the load-bearing base 5 and the working platform 6, respectively. Through the action of the auxiliary support mechanisms 8, it is ensured that the front and rear positions of the working platform 6 and the load-bearing base 5 will not be offset.

[0037] In addition, each auxiliary support mechanism 8 in the device is composed of a positioning plate 803, and a follower rod 802 is respectively provided at the left and right ends of the positioning plate 803, and the upper and lower ends of each follower rod 802 are respectively rotatably connected to the driven rod 801. The two driven rods 801 on one side are rotatably connected to the load-bearing base 5 and the working platform 6 at the far ends. By limiting the height of the positioning plate 803 and using the positioning plate 803 to constrain the synchronous height of the two follower rods 802 on one side, the auxiliary support mechanism 8 can ensure that there will be no left-right position deviation between the working platform 6 and the load-bearing base 5.

[0038] It should be clearly pointed out that by limiting the height of the positioning plate 803, the angle between the driven rods 801 on both sides can be further controlled, that is, the vertical projection length of a single driven rod 801 can be adjusted. This operation can limit the height between the load-bearing base 5 and the working platform 6 through the auxiliary support mechanism 8, ensuring that after the lifting mechanism 9 releases the height limit on the working platform 6, the height of the working platform 6 can still be stably maintained at a predetermined position.

[0039] Therefore, if Figure 1 , Figure 3 As shown, the device is provided with a bidirectional locking mechanism 4 between each positioning plate 803 and the working platform 6, and a unidirectional locking mechanism 7 between each positioning plate 803 and the load-bearing base 5. This double locking mechanism ensures the safety and reliability of the lifting platform during use.

[0040] It must be pointed out that in actual application, the unlocking end of the two-way locking mechanism 4 is located above the working platform 6, while the unlocking end of the one-way locking mechanism 7 is located near the load-bearing base 5. This design fully guarantees the safety of operators on the working platform 6 under different working conditions.

[0041] Specifically, in actual operation, when the two-way locking mechanism 4 is activated, the distance between the working platform 6 and the load-bearing base 5 will be completely fixed and cannot be changed. When the one-way locking mechanism 7 is activated, the distance between the working platform 6 and the load-bearing base 5 can be adjusted according to actual needs. At this time, the working platform 6 can be lifted to change the working surface of the operator.

[0042] To further explain, in actual operation, when the operator standing on the upper end of the working platform 6 is ready and holds the guardrail on the upper end of the working platform 6 to maintain stability, he can operate the unlocking end of the two-way locking mechanism 4 to disable the two-way locking mechanism 4. At this time, the assistant can move the lifting mechanism 9 to make the contact plate 1 closely contact with the lower end of the working platform 6, thereby raising the height of the working platform 6. If the height of the working platform 6 needs to be lowered, the assistant must first lift the working platform 6 to ensure that the lower end of the working platform 6 is in close contact with the contact plate 1 before operating the unlocking end of the one-way locking mechanism 7 to disable the one-way locking mechanism 7.

[0043] Specifically, if Figure 4 , Figure 5 As shown, the bidirectional locking mechanism 4 is composed of a positioning shaft 401 in the upper and lower axial directions, and a plurality of limit blocks 402 are arranged in sequence from top to bottom at the outer end of the positioning shaft 401 , and these limit blocks 402 are fixedly connected to the positioning shaft 401 .

[0044] In addition, from Figure 4 It can be seen from the relatively high partial enlarged view in FIG that the positioning shaft 401 is rotatably connected to the working platform 6 through a bearing. This design not only ensures the free rotation of the positioning shaft 401, but also prevents the relative displacement between the positioning shaft 401 and the working platform 6 in the vertical direction, thereby realizing the function of controlling the height of the working platform 6 through the positioning shaft 401.

[0045] At the same time, each positioning shaft 401 is sleeved with a positioning ring 403 on the outside, and the positioning ring 403 is fixedly connected to the positioning plate 803. The positioning ring 403 is provided with through grooves 404, which penetrate the positioning ring 403 from top to bottom. In actual operation, by rotating the positioning shaft 401, the limit block 402 and the through groove 404 can be placed in the same vertical plane, and the limit block 402 can slide freely in the through groove 404. In other words, when the limit block 402 and the through groove 404 are in the same vertical plane, the two-way locking mechanism 4 will lose its locking effect.

[0046] Therefore, the device is designed with a limiting groove 405 on the inner side of each positioning ring 403, and the outer diameter length of the limiting groove 405 is equal to the distance from the outer end of the limiting block 402 to the central axis of the positioning shaft 401. In this way, the operator can insert the limiting block 402 into the limiting groove 405 by rotating the positioning shaft 401. Since the limiting block 402 cannot move vertically in the limiting groove 405, when the limiting block 402 is located in the limiting groove 405, the height between the working platform 6 and the positioning plate 803 remains unchanged, that is, the inclination angle of the driven rod 801 remains stable. By utilizing the characteristic that the angles between the two driven rods 801 on one side and the horizontal plane are equal, the height of the working platform 6 can be ensured to remain unchanged.

[0047] Specifically, if Figure 5 As shown, the one-way locking mechanism 7 is composed of a rack 701 fixedly connected to the positioning plate 803, and a follower gear 702 is provided on one side of each rack 701. When the follower gear 702 cannot rotate, the meshing effect between the rack 701 and the follower gear 702 ensures that the rack 701 cannot move up and down relative to the follower gear 702.

[0048] In view of this, the device is provided with a ratchet locking member on one side of each follower gear 702, which ensures that the follower gear 702 can only rotate on one side, that is, the rack 701 can only move upward.

[0049] It is worth noting that, when observing from the front side of the device to the rear, when the rack 701 moves upward, the follower gear 702 will rotate clockwise synchronously.

[0050] In order to adapt to the on-site environment and prevent the complex conditions on the site from affecting the complex components, the device further constrains each one-way locking mechanism 7, including the setting of a mounting plate 706. The mounting plate 706 is movably connected with the corresponding follower gear 702 and the ratchet locking member. At the same time, each ratchet locking member includes a driven gear 703, which is meshed and driven with the corresponding follower gear 702, that is, when the follower gear 702 rotates clockwise, the driven gear 703 rotates counterclockwise.

[0051] Therefore, the device is provided with a pawl 704 on the upper side of each driven gear 703, and each pawl 704 is rotatably connected to the corresponding mounting plate 706 via a mounting shaft 705. This design allows each driven gear 703 to rotate counterclockwise without restriction, while clockwise rotation will conflict with the pawl 704. In addition, the rotation direction of the follower gear 702 can be restricted only by the cooperation between the driven gear 703 and the pawl 704, and this design can effectively avoid the influence of high dust environment on complex components.

[0052] Furthermore, if Figure 1 As shown, the device is provided with roller rails 3 on both sides of each mounting platform 2, and a sliding connection is achieved with the load-bearing base 5 through the roller rails 3. This design enables the mounting platform 2 to move laterally on the load-bearing base 5 according to actual needs.

[0053] In addition, the mounting platform 2 can be moved to a position where its projection on the vertical plane does not overlap with the projection of the working platform 6 by means of the roller rails 3. This design significantly improves the flexibility of the platform and ensures that the materials transported by the contact plate 1 will not conflict with the working platform 6 in terms of travel. The secondary transported materials can be transported to a position flush with the working platform 6 or even higher than the working platform 6, so that the operator can take them easily.

[0054] At the same time, the provision of the roller rail 3 ensures that the friction resistance is reduced to a minimum during the sliding process of the mounting platform 2, thereby facilitating the assistant to easily adjust the position of the mounting platform 2.

[0055] Further, such as Figure 1 As shown, in order to prevent the mounting platform 2 from losing support during the sliding process relative to the working platform 6 and to ensure the smooth operation of the secondary conveyed materials when moving upward, an auxiliary roller 10 is provided on the left side of the lower end of the mounting platform 2. At this time, one end of the mounting platform 2 is connected to the load-bearing base 5 through the roller slide 3, and the load-bearing base 5 bears the supporting force, while the other end is provided with supporting force by the auxiliary roller 10.

[0056] At the same time, in order to avoid the travel conflict between the slide rail and the bearing base 5 caused by the change in the angle of the mounting platform 2, the device is designed to ensure that the lower end surface of the supporting roller 11 and the lower end surface of the auxiliary roller 10 are in the same horizontal plane. In addition, this design improves the stability and adaptability of the device under different ground conditions.

[0057] It is worth noting that the auxiliary roller 10 has the same structure as the supporting roller 11, and both are equipped with a self-locking structure. This design makes the lifting platform safer and more stable during use.

[0058] In addition, the device has an avoidance groove 12 running through the upper and lower ends of the auxiliary roller 10 at the lower end of the load-bearing base 5. When the auxiliary roller 10 is located in the avoidance groove 12, the projection of the mounting platform 2 on the vertical plane coincides with the projection of the working platform 6.

[0059] Further, if Figure 1 , Figure 2 , Figure 7 As shown, in order to ensure that there is no relative displacement between the mounting platform 2 and the load-bearing base 5 during the overall movement of the device, the device is provided with a slidingly connected auxiliary rod 13 on the right side of the mounting platform 2. The load-bearing base 5 is provided with positioning holes 16 running through the upper and lower parts of the auxiliary rod 13. After the auxiliary rod 13 is inserted into the positioning hole 16, the position locking between the mounting platform 2 and the load-bearing base 5 is achieved through the cooperation between the auxiliary rod 13 and the positioning hole 16, thereby preventing the relative displacement between the two.

[0060] In addition, when the restraint auxiliary rod 13 is inserted into the positioning hole 16, the device ensures that the projection of the mounting platform 2 in the vertical direction completely overlaps with the projection of the working platform 6. This design ensures that when the lifting mechanism 9 lifts the working platform 6, the contact plate 1 and the working platform 6 can maintain the maximum contact area, thereby ensuring the stability and accuracy of the working platform 6 during the movement.

[0061] At the same time, the device is provided with a compression spring 14 on the outside of the auxiliary rod 13, and a limiting ring 15 is fixedly connected to the outside of the auxiliary rod 13. The limiting ring 15 is located below the compression spring 14, one end of the compression spring 14 is in contact with the mounting platform 2, and the other end is in contact with the limiting ring 15. Through the action of the compression spring 14, the auxiliary rod 13 has a downward movement tendency, which helps to avoid the auxiliary rod 13 from being separated from the positioning hole 16 due to bumps during the travel on complex roads, thereby achieving a limiting effect.

[0062] In the initial setup stage of the present invention:

[0063] First, the assistant ensures that the auxiliary rod 13 is correctly inserted into the positioning hole 16, and then moves the device to the predetermined working position;

[0064] Then, the assistant connects the power source required by the lifting mechanism 9 and locks the multiple supporting rollers 11 synchronously;

[0065] Next, the operator stands on the working platform 6 and places the material on the working platform 6. During this process, the operator rotates the positioning shaft 401 so that the limit block 402 and the through slot 404 are in the same vertical plane, causing the two-way locking mechanism 4 to be temporarily ineffective;

[0066] Then, the assistant starts the power source of the lifting mechanism 9, so that the contact plate 1 is in close contact with the working platform 6, and the working platform 6 continues to rise. During this process, the ratchet 704 is always stuck in the teeth of the driven gear 703, ensuring that the one-way locking mechanism 7 continues to work;

[0067] Afterwards, when the working platform 6 reaches the predetermined position, the operator rotates the positioning shaft 401 again to ensure that the limit block 402 is inserted into the limit groove 405. At this time, the two-way locking mechanism 4 functions again.

[0068] Finally, the operators used the materials they brought with them to carry out the painting operation.

[0069] In the actual use of the present invention, if it is necessary to carry out secondary material transportation or expand the working scope of the operator:

[0070] First, the assistant pulls the auxiliary rod 13 out of the positioning hole 16 and slides the mounting platform 2 to the top position of the roller rail 3. At this time, the projection of the contact plate 1 on the vertical plane does not overlap with the projection of the working platform 6 at all, the limit block 402 is always stuck in the limit groove 405, and the two-way locking mechanism 4 continues to work;

[0071] Then, the assistant uses the self-locking structure on the auxiliary roller 10 to complete the locking, ensuring that the relative position between the mounting platform 2 and the load-bearing base 5 remains unchanged;

[0072] Finally, the assistant places the secondary transported material on the contact plate 1, or directly lifts the contact plate 1 to make it flush with the working platform 6. At this time, the operator can stand on the working platform 6 to take the material or expand the working range.

[0073] After finishing the painting job:

[0074] First, the assistant releases the self-locking state of the auxiliary roller 10 and lowers the contact plate 1 to ensure that the height of the contact plate 1 is lower than the height of the working platform 6;

[0075] Then, the assistant slides the mounting table 2 to ensure that the auxiliary rod 13 is correctly inserted into the positioning hole 16;

[0076] Next, the operator rotates the positioning shaft 401 to make the limit block 402 and the through slot 404 in the same vertical plane. At this time, the two-way locking mechanism 4 fails. At the same time, during this process, the ratchet 704 is always stuck in the teeth of the driven gear 703, and the one-way locking mechanism 7 continues to work;

[0077] Then, the assistant starts the lifting mechanism 9 to raise the contact plate 1 until the contact plate 1 drives the working platform 6 to rise;

[0078] Afterwards, the assistant rotates the ratchet 704 to separate it from the driven gear 703, and at this time, the one-way locking mechanism 7 fails. At this time, the assistant lowers the contact plate 1, and the working platform 6 will descend synchronously;

[0079] Finally, after the working platform 6 is lowered to the appropriate position, the operator leaves the working platform 6. In this process, the assistant releases the self-locking state of the supporting roller 11 and pushes the device to move to the appropriate position.

[0080] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastering lifting platform suitable for construction engineering, comprising a load-bearing base (5), a lifting mechanism (9) is arranged on the upper end of the load-bearing base (5), and a working platform (6) is arranged on the upper end of the lifting mechanism (9), characterized in that: Auxiliary support mechanisms (8) are respectively arranged on the front and rear sides of the upper end of the load-bearing base (5), and the upper and lower ends of the auxiliary support mechanism (8) are respectively movably connected to the load-bearing base (5) and the working platform (6), and the upper end of the load-bearing base (5) is slidably connected to the mounting platform (2), and the mounting platform (2) is fixedly connected to the lifting mechanism (9); Each of the auxiliary support mechanisms (8) comprises a positioning plate (803), the left and right ends of the positioning plate (803) are respectively slidably connected to a follower rod (802), and the upper and lower ends of each follower rod (802) are respectively rotatably connected to a driven rod (801), and the multiple driven rods (801) on the left and right sides of a single auxiliary support mechanism (8) are symmetrically arranged; A bidirectional locking mechanism (4) is provided between each positioning plate (803) and the working platform (6), and a unidirectional locking mechanism (7) is provided between each positioning plate (803) and the load-bearing base (5); Each of the mounting platforms (2) is provided with a roller rail (3) on both sides, and the mounting platform (2) is slidably connected to the load-bearing base (5) via the roller rail (3). Furthermore, the mounting platform (2) can be moved to a position where its vertical plane projection and the vertical plane projection of the working platform (6) do not overlap at all via the roller rail (3); The upper end of the lifting mechanism (9) is fixedly connected to a contact plate (1), and the angle between the upper end surface of the contact plate (1) and the horizontal plane is zero.

2. A plastering lifting platform for construction engineering according to claim 1, characterized in that: Each of the two-way locking mechanisms (4) comprises a positioning shaft (401) in an upper and lower axial direction, a plurality of limit blocks (402) are arranged in parallel from top to bottom at the outer end of the positioning shaft (401), and the plurality of limit blocks (402) are fixedly connected to the positioning shaft (401); A positioning ring (403) is sleeved on the outside of each positioning shaft (401), the positioning ring (403) is fixedly connected to the corresponding positioning plate (803), and a through groove (404) is formed on each positioning ring (403) from top to bottom for the limit block (402); A limiting groove (405) is provided on the inner side of each positioning ring (403), and the outer diameter length of the limiting groove (405) is equal to the distance between the outer end of the limiting block (402) and the central axis of the positioning shaft (401).

3. A plastering lifting platform suitable for construction engineering according to claim 1, characterized in that: The one-way locking mechanism (7) comprises a rack (701) fixedly connected to the positioning plate (803), a follower gear (702) being provided on one side of each rack (701), and each follower gear (702) being meshed and transmission-connected with the corresponding rack (701), and a ratchet locking component being provided on one side of each follower gear (702); Each of the one-way locking mechanisms (7) comprises a mounting plate (706), and the mounting plate (706) is movably connected to the corresponding follower gear (702) and the ratchet locking component.

4. A plastering lifting platform for construction engineering according to claim 3, characterized in that: Each of the ratchet locking components comprises a driven gear (703), which is meshed and transmission-connected with the corresponding follower gear (702), and a ratchet pawl (704) is meshedly arranged on the upper side of each driven gear (703), and each ratchet pawl (704) is rotationally connected to the corresponding mounting plate (706) via a mounting shaft (705).

5. The plastering lifting platform for construction engineering according to claim 1, characterized in that: The lower end of the load-bearing base (5) is provided with four supporting rollers (11) arranged in a rectangular array, the lower left end of the mounting platform (2) is fixedly connected with an auxiliary roller (10), and the lower end surface of the supporting roller (11) and the lower end surface of the auxiliary roller (10) are in the same horizontal plane; The lower end of the load-bearing base (5) is provided with an escape groove (12) extending upward and downward for the auxiliary roller (10); when the auxiliary roller (10) is located inside the escape groove (12), the projection of the mounting platform (2) on the vertical plane coincides with the projection of the working platform (6) on the vertical plane.

6. A plastering lifting platform for construction engineering according to claim 5, characterized in that: Each of the supporting rollers (11) has the same structure as each of the auxiliary rollers (10), and both the supporting rollers (11) and the auxiliary rollers (10) have a self-locking structure; An auxiliary rod (13) is slidably connected to the right side of each mounting platform (2), a compression spring (14) is sleeved on the outside of the auxiliary rod (13), and a limiting ring (15) is fixedly connected to the outside of the auxiliary rod (13), the limiting ring (15) is located below the compression spring (14), one axial end of the compression spring (14) abuts against the mounting platform (2), and the other axial end of the compression spring (14) abuts against the limiting ring (15); The load-bearing base (5) is provided with a positioning hole (16) extending upward and downward for the auxiliary rod (13); when the auxiliary rod (13) is inserted into the positioning hole (16), the projection of the mounting platform (2) on the vertical plane completely overlaps with the projection of the working platform (6) on the vertical plane.

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