Stable ladder structure matched with pool

Abstract

The utility model discloses a stable ladder structure matched with a pool, and aims to overcome the defect that the stability of a ladder is affected due to the fact that the ladder and the pool are not connected or contacted. The escalator comprises an escalator body, and a supporting plate capable of moving up and down is arranged on the upper portion of the escalator body and supported on the upper edge of a pool. The escalator can abut against and be supported on the water pool, stability is improved, and the escalator can adapt to water pools with different heights and is flexible and convenient to use.

Description

Technical Field

[0001] This utility model relates to a swimming pool accessory device, and more specifically, to a stable pool accessory ladder structure. Background Technology

[0002] Because of their height, above-ground swimming pools require the installation of escalators to function properly. Most commonly used escalators for swimming pools have an "eight" shape, with the two legs of the escalator supporting the inside and outside of the pool respectively, making it convenient for users to climb into the pool. However, there is no connection or contact between the escalator and the pool, which affects the stability of the escalator. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a stable water tank ladder structure. The ladder can be supported against the water tank, improving stability. Moreover, the ladder can be adapted to the use of water tanks of different heights, making it flexible and convenient.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a stable water tank supporting ladder structure, including a ladder body, a support plate that can be raised and lowered and moved on the upper part of the ladder body, and the support plate is supported on the upper edge of the water tank.

[0005] When used with a water tank, the height of the support plate is adjusted after the escalator is installed, so that the support plate rests against the upper edge of the water tank. The support plate acts as an auxiliary support for the escalator, improving its stability. Because the support plate can be raised and lowered, it can accommodate water tanks of different heights.

[0006] The escalator of this application can be supported against the pool, improving stability, and the escalator can be adapted to use in pools of different heights, making it flexible and convenient.

[0007] Preferably, the lower edge of the support plate is provided with a support groove, which is inserted into the upper edge of the pool.

[0008] Support grooves are provided on the support plate to prevent the support plate from moving away from the upper edge of the pool.

[0009] Preferably, a fixed side plate is provided on the escalator body corresponding to the support plate. The support plate is installed on the fixed side plate by lifting and moving. The fixed side plate and the support plate are locked together by a locking mechanism.

[0010] The support plate is mounted on a fixed side plate and moves up and down stably and reliably. After the support plate moves into place, it is locked in place by a locking mechanism, ensuring reliable support for the entire escalator.

[0011] Preferably, the locking mechanism includes a serrated bar and a spring plate. The spring plate is provided with spring teeth. The support plate moves up and down along the length of the serrated bar, and the spring teeth are engaged with the serrated bar to achieve positioning and locking.

[0012] The spring is elastic, and the serrated strip can lock in one direction. During the lifting and lowering movement of the support plate, the spring and the serrated strip separate. After the support plate moves into position, the spring engages with the serrated strip to achieve positioning and locking. At this time, the support plate can no longer move upward, thus achieving stable support for the escalator.

[0013] In another embodiment, the locking mechanism includes a horizontal screw and a vertical screw. The horizontal screw is threaded onto the support plate, and the vertical screw is threaded onto the fixed side plate. After the support plate moves down into place, the horizontal screw is tightened to abut against the fixed side plate, and the vertical screw is tightened to push against the upper part of the support plate.

[0014] After the support plate is raised and lowered into position, tighten the horizontal screws so that they abut against the fixed side plate, thus locking the support plate and the fixed side plate together. Tighten the vertical screws so that they push against the upper part of the support plate, positioning the support plate and preventing it from moving upwards, thereby providing stable support for the escalator.

[0015] Preferably, a sliding groove is provided on the fixed side plate, a slider is provided on the support plate, an anti-disengagement hook is provided on the slider, the slider is slidably connected to the sliding groove, and the anti-disengagement hook is locked at the opening end of the sliding groove.

[0016] During the lifting and lowering movement of the support plate, the slider slides within the groove, ensuring the smoothness of the support plate's lifting and lowering movement. An anti-disengagement hook is engaged at the opening end of the groove to prevent the support plate from separating from the fixed side plate.

[0017] Preferably, a top plate is provided on the upper part of the escalator body, and support plates are provided on the left and right sides of the top plate. An "X"-shaped reinforcing rib is embedded on the lower surface of the top plate.

[0018] The top plate is fitted with X-shaped reinforcing ribs, which improves the structural strength of the top plate and helps to ensure the stability of the escalator.

[0019] Preferably, the escalator body is equipped with a step, and both ends of the step are provided with T-shaped mounting heads. The escalator body is provided with a mounting groove and a clearance groove. The mounting groove is T-shaped. The mounting head is first inserted into the clearance groove, and then slid and snapped into the mounting groove.

[0020] During tread installation, the mounting heads at both ends are installed in the mounting slots on the escalator body. Furthermore, both the mounting heads and the mounting slots are T-shaped, making it difficult for the treads to separate from the escalator body after connection.

[0021] Preferably, reinforcing ribs are embedded on the lower surface of the pedal, with each end of the reinforcing ribs supported in two mounting grooves.

[0022] Reinforcing ribs are installed on the pedals, which improves the structural strength of the pedals and thus increases their load-bearing capacity.

[0023] Preferably, a support protrusion is provided on the escalator body below the step, and the edge of the step end is supported on the support protrusion.

[0024] The support protrusion provides support and positioning for the end of the pedal, making the pedal support more stable.

[0025] Compared with the prior art, the beneficial effects of this utility model are: (1) The escalator of this application can be supported against the pool, which improves the stability, and the escalator can adapt to the use of pools of different heights, which is flexible and convenient; (2) The top plate of the upper part of the escalator is inlaid with X-shaped reinforcing ribs, which improves the structural strength of the top plate and helps to ensure the stability of the escalator; (3) The treads are inlaid with reinforcing ribs, which improves the structural strength of the treads, thereby improving the load-bearing capacity of the treads. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the usage state of this utility model.

[0027] Figure 2 This is a side view of the present invention.

[0028] Figure 3 This is a schematic diagram of the top plate connection of this utility model.

[0029] Figure 4 This is an exploded view of the connection between the support plate and the fixed side plate of this utility model.

[0030] Figure 5 This is a cross-sectional view of the connection between the support plate and the fixed side plate of this utility model.

[0031] Figure 6 This is an exploded view of the connection between the footboard and the escalator body of this utility model.

[0032] Figure 7 This is a diagram showing the connection between the tread and the escalator body of this utility model.

[0033] Figure 8 This is a schematic diagram of the support plate connection in Embodiment 2 of this utility model.

[0034] Figure 9 This is a structural diagram of the support plate of Embodiment 3 of this utility model.

[0035] In the diagram: 1. Escalator body, 2. Support plate, 3. Side beam, 4. Column, 5. Support groove, 6. Fixed side plate, 7. Slide groove, 8. Sliding block, 9. Anti-disengagement hook, 10. Recessed groove, 11. Top plate, 12. Reinforcing rib, 13. Outer ladder, 14. Inner ladder, 15. Handrail, 16. Upright plate, 17. Step, 18. Serrated strip, 19. Spring piece, 20. Spring tooth, 21. Mounting head, 22. Mounting groove, 23. Clearance groove, 24. Reinforcing rib, 25. Support protrusion, 26. Horizontal screw, 27. Vertical screw, 28. Connecting block, 29. Buffer column, 30. Buffer spring, 31. Guide surface, 32. Mounting hole. Detailed Implementation

[0036] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0037] Example 1: A stable water tank with supporting ladder structure (see appendix) Figure 1 To be continued Figure 7 The system includes an escalator body 1, with a movable support plate 2 on its upper part, which rests on the upper edge of the pool. The upper edge of the pool includes several frame beams 3 connected end-to-end to form a circle. The frame beams 3 are connected to columns 4, which support the frame beams 3. The lower edge of the support plate 2 has a support groove 5, which is inserted into the frame beams 3 at the upper edge of the pool. The support groove 5 on the support plate 2 prevents the support plate 2 from detaching from the upper edge of the pool due to escalator movement.

[0038] Fixed side plates 6 are correspondingly installed on the escalator body 1 and the support plate 2. The support plate 2 is mounted on the fixed side plates 6 for vertical movement. The fixed side plates 6 and the support plate 2 are locked in place by a locking mechanism. The support plate 2 moves vertically and reliably on the fixed side plates 6. After the support plate 2 moves into position, it is locked in place by the locking mechanism, ensuring reliable support for the entire escalator. Two sliding grooves 7 are provided on the fixed side plates 6, and two sliders 8 are provided on the support plate 2. Anti-disengagement hooks 9 are provided on the sliders 8. The sliders 8 are slidably connected to the sliding grooves 7, and the anti-disengagement hooks 9 are engaged at the opening end of the sliding grooves 7. A recessed groove 10 is provided at the opening end of the inner surface of the sliding groove 7. The anti-disengagement hooks 9 are engaged in the recessed grooves 10, thereby preventing the support plate 2 from detaching from the fixed side plates 6 to the left and right. The lower end of the sliding groove 7 extends to the lower surface of the fixed side plates 6, and the sliders 8 are installed into the sliding grooves 7 from the lower end of the sliding grooves 7. During the vertical movement of the support plate 2, the sliders 8 slide within the sliding grooves 7, ensuring the smoothness of the vertical movement of the support plate 2. The anti-disengagement hook 9 is locked at the opening end of the slide groove 7 to prevent the support plate 2 and the fixed side plate 6 from separating.

[0039] The escalator body 1 has a top plate 11 on its upper part, and fixed side plates 6 are installed on both the left and right sides of the top plate 11. Support plates 2 are set on the left and right sides of the top plate 11, and "X"-shaped reinforcing ribs 12 are embedded on the lower surface of the top plate 11. The reinforcing ribs 12 improve the structural strength and load-bearing capacity of the top plate 11.

[0040] The escalator body 1 includes an outer ladder 13 and an inner ladder 14, which are connected to the front and rear sides of the top plate 11, respectively. Handrails 15 are installed on both the left and right sides of the top plate 11. The outer ladder 13 and the inner ladder 14 are connected to the top plate 11 to form a figure-eight structure. Both the outer ladder 13 and the inner ladder 14 include two uprights 16 and several steps 17 installed between the two uprights 16.

[0041] The locking mechanism includes a serrated bar 18 and a spring plate 19. The spring plate 19 has spring teeth 20. The support plate 2 moves up and down along the length of the serrated bar 18, and the spring teeth 20 engage with the serrated bar 18 to achieve positioning and locking. The serrated bar 18 is vertically arranged on the fixed side plate 6, with the serrations on the serrated bar 18 inclined outwards from top to bottom. The lower end of the spring plate 19 is integrally formed with the support plate 2, and the spring teeth 20 are located on the upper end of the spring plate 19. The end face of the spring teeth 20 is inclined inwards from top to bottom. Because the spring plate 19 is elastic, the spring teeth 20 can slide past the serrated bar 18 during the downward movement of the support plate 2. When the support plate 2 is in position, the spring teeth 20 engage with the serrated bar 18 to achieve positioning and locking. At this time, the support plate 2 can be reliably supported on the upper edge of the pool without the support plate 2 moving upwards.

[0042] The escalator body 1 is equipped with a tread 17, with T-shaped mounting heads 21 at both ends. The escalator body 1 has a mounting groove 22 and a clearance groove 23. The mounting groove 22 is T-shaped, and the clearance groove 23 is located above the mounting groove 22 and is connected to it. Both the mounting groove 22 and the clearance groove 23 are located on the upright plate 16 and penetrate through it. The mounting head 21 is first inserted into the clearance groove 23, then slides downwards and engages with the mounting groove 22. A reinforcing rib 24 is embedded on the lower surface of the tread 17, with both ends of the reinforcing rib 24 supported in the two mounting grooves 22. A support protrusion 25 is located below the tread 17 on the escalator body 1, and the support protrusion 25 is located on the upright plate 16, with the edge of the tread 17 supported on the support protrusion 25.

[0043] The escalator is used in conjunction with a water tank. After the escalator is installed, the height of the support plate 2 is adjusted by raising and lowering it, so that the support plate 2 rests against the upper edge of the water tank. The support plate 2 serves as an auxiliary support for the escalator, which helps to improve the stability of the escalator. Because the support plate 2 can be raised and lowered, it can be used with water tanks of different heights.

[0044] Example 2: A stable water tank with matching ladder structure (see appendix) Figure 8The system includes an escalator body 1, with a movable support plate 2 on its upper part, which rests on the upper edge of the pool. The upper edge of the pool includes several frame beams 3 connected end-to-end to form a circle. The frame beams 3 are connected to columns 4, which support the frame beams 3. The lower edge of the support plate 2 has a support groove 5, which is inserted into the frame beams 3 at the upper edge of the pool. The support groove 5 on the support plate 2 prevents the support plate 2 from detaching from the upper edge of the pool due to escalator movement.

[0045] Fixed side plates 6 are correspondingly installed on the escalator body 1 and the support plate 2. The support plate 2 is mounted on the fixed side plates 6 for vertical movement. The fixed side plates 6 and the support plate 2 are locked in place by a locking mechanism. The support plate 2 moves vertically and reliably on the fixed side plates 6. After the support plate 2 moves into position, it is locked in place by the locking mechanism, ensuring reliable support for the entire escalator. Two sliding grooves 7 are provided on the fixed side plates 6, and two sliders 8 are provided on the support plate 2. Anti-disengagement hooks 9 are provided on the sliders 8. The sliders 8 are slidably connected to the sliding grooves 7, and the anti-disengagement hooks 9 are engaged at the opening end of the sliding grooves 7. A recessed groove 10 is provided at the opening end of the inner surface of the sliding groove 7. The anti-disengagement hooks 9 are engaged in the recessed grooves 10, thereby preventing the support plate 2 from detaching from the fixed side plates 6 to the left and right. The lower end of the sliding groove 7 extends to the lower surface of the fixed side plates 6, and the sliders 8 are installed into the sliding grooves 7 from the lower end of the sliding grooves 7. During the vertical movement of the support plate 2, the sliders 8 slide within the sliding grooves 7, ensuring the smoothness of the vertical movement of the support plate 2. The anti-disengagement hook 9 is locked at the opening end of the slide groove 7 to prevent the support plate 2 and the fixed side plate 6 from separating.

[0046] The escalator body 1 has a top plate 11 on its upper part, and fixed side plates 6 are installed on both the left and right sides of the top plate 11. Support plates 2 are set on the left and right sides of the top plate 11, and "X"-shaped reinforcing ribs 12 are embedded on the lower surface of the top plate 11. The reinforcing ribs 12 improve the structural strength and load-bearing capacity of the top plate 11.

[0047] The escalator body 1 includes an outer ladder 13 and an inner ladder 14, which are connected to the front and rear sides of the top plate 11, respectively. Handrails 15 are installed on both the left and right sides of the top plate 11. The outer ladder 13 and the inner ladder 14 are connected to the top plate 11 to form a figure-eight structure. Both the outer ladder 13 and the inner ladder 14 include two uprights 16 and several steps 17 installed between the two uprights 16.

[0048] The locking mechanism includes a horizontal screw 26 and a vertical screw 27. The horizontal screw 26 is threaded onto the support plate 2, and the vertical screw 27 is threaded onto the fixed side plate 6. Connecting blocks 28 are provided on the fixed side plate 6 corresponding to the vertical screw 27, and the vertical screw 27 is threaded onto the connecting blocks 28. Horizontal screws 26 are provided on both the front and rear sides of the vertical screw 27. After the support plate 2 moves downward into position, the horizontal screws 26 are tightened to abut against the fixed side plate 6, and the vertical screws 27 are tightened to push against the upper part of the support plate 2.

[0049] After the support plate 2 is raised and lowered into place, tighten the horizontal screw 26 so that the horizontal screw 26 abuts against the fixed side plate 6, thereby locking the support plate 2 and the fixed side plate 6. Tighten the vertical screw 27 so that the vertical screw 27 pushes against the upper part of the support plate 2, thereby positioning the support plate 2 and preventing the support plate 2 from moving upward, thus achieving stable support for the escalator.

[0050] The escalator body 1 is equipped with a tread 17, with T-shaped mounting heads 21 at both ends. The escalator body 1 has a mounting groove 22 and a clearance groove 23. The mounting groove 22 is T-shaped, and the clearance groove 23 is located above the mounting groove 22 and is connected to it. Both the mounting groove 22 and the clearance groove 23 are located on the upright plate 16 and penetrate through it. The mounting head 21 is first inserted into the clearance groove 23, then slides downwards and engages with the mounting groove 22. A reinforcing rib 24 is embedded on the lower surface of the tread 17, with both ends of the reinforcing rib 24 supported in the two mounting grooves 22. A support protrusion 25 is located below the tread 17 on the escalator body 1, and the support protrusion 25 is located on the upright plate 16, with the edge of the tread 17 supported on the support protrusion 25.

[0051] The escalator is used in conjunction with a water tank. After the escalator is installed, the height of the support plate 2 is adjusted by raising and lowering it, so that the support plate 2 rests against the upper edge of the water tank. The support plate 2 serves as an auxiliary support for the escalator, which helps to improve the stability of the escalator. Because the support plate 2 can be raised and lowered, it can be used with water tanks of different heights.

[0052] Example 3: A stable water tank with supporting ladder structure (see appendix) Figure 9 The system includes an escalator body 1, with a movable support plate 2 on its upper part, which rests on the upper edge of the pool. The upper edge of the pool includes several frame beams 3 connected end-to-end to form a circle. The frame beams 3 are connected to columns 4, which support the frame beams 3. The lower edge of the support plate 2 has a support groove 5, which is inserted into the frame beams 3 at the upper edge of the pool. The support groove 5 on the support plate 2 prevents the support plate 2 from detaching from the upper edge of the pool due to escalator movement.

[0053] Buffer columns 29 and buffer springs 30 are installed on the opposite side walls of the support groove 5 on the support plate 2. The buffer springs 30 rest on the buffer columns 29. An inclined guide surface 31 is provided on the outer end face of the buffer columns 29. The two buffer columns 29 are arranged opposite each other. Mounting holes 32 are provided on the support plate 2 and corresponding to the buffer columns 29. The buffer columns 29 are connected to the mounting holes 32. The mounting holes 32 have a T-shaped structure. A limiting protrusion is provided at the inner end of the buffer column 29. The limiting protrusion is adapted to the large diameter part of the mounting hole 32, and the buffer column 29 is adapted to the small diameter part of the mounting hole 32. The buffer springs 30 are installed in the mounting holes 32. When the support plate 2 is supported to the upper edge of the pool, the buffer columns 29 rest on the side wall of the frame beam 3, which helps to improve the stability of the support plate 2.

[0054] Fixed side plates 6 are correspondingly installed on the escalator body 1 and the support plate 2. The support plate 2 is mounted on the fixed side plates 6 for vertical movement. The fixed side plates 6 and the support plate 2 are locked in place by a locking mechanism. The support plate 2 moves vertically and reliably on the fixed side plates 6. After the support plate 2 moves into position, it is locked in place by the locking mechanism, ensuring reliable support for the entire escalator. Two sliding grooves 7 are provided on the fixed side plates 6, and two sliders 8 are provided on the support plate 2. Anti-disengagement hooks 9 are provided on the sliders 8. The sliders 8 are slidably connected to the sliding grooves 7, and the anti-disengagement hooks 9 are engaged at the opening end of the sliding grooves 7. A recessed groove 10 is provided at the opening end of the inner surface of the sliding groove 7. The anti-disengagement hooks 9 are engaged in the recessed grooves 10, thereby preventing the support plate 2 from detaching from the fixed side plates 6 to the left and right. The lower end of the sliding groove 7 extends to the lower surface of the fixed side plates 6, and the sliders 8 are installed into the sliding grooves 7 from the lower end of the sliding grooves 7. During the vertical movement of the support plate 2, the sliders 8 slide within the sliding grooves 7, ensuring the smoothness of the vertical movement of the support plate 2. The anti-disengagement hook 9 is locked at the opening end of the slide groove 7 to prevent the support plate 2 and the fixed side plate 6 from separating.

[0055] The escalator body 1 has a top plate 11 on its upper part, and fixed side plates 6 are installed on both the left and right sides of the top plate 11. Support plates 2 are set on the left and right sides of the top plate 11, and "X"-shaped reinforcing ribs 12 are embedded on the lower surface of the top plate 11. The reinforcing ribs 12 improve the structural strength and load-bearing capacity of the top plate 11.

[0056] The escalator body 1 includes an outer ladder 13 and an inner ladder 14, which are connected to the front and rear sides of the top plate 11, respectively. Handrails 15 are installed on both the left and right sides of the top plate 11. The outer ladder 13 and the inner ladder 14 are connected to the top plate 11 to form a figure-eight structure. Both the outer ladder 13 and the inner ladder 14 include two uprights 16 and several steps 17 installed between the two uprights 16.

[0057] The locking mechanism includes a serrated bar 18 and a spring plate 19. The spring plate 19 has spring teeth 20. The support plate 2 moves up and down along the length of the serrated bar 18, and the spring teeth 20 engage with the serrated bar 18 to achieve positioning and locking. The serrated bar 18 is vertically arranged on the fixed side plate 6, with the serrations on the serrated bar 18 inclined outwards from top to bottom. The lower end of the spring plate 19 is integrally formed with the support plate 2, and the spring teeth 20 are located on the upper end of the spring plate 19. The end face of the spring teeth 20 is inclined inwards from top to bottom. Because the spring plate 19 is elastic, the spring teeth 20 can slide past the serrated bar 18 during the downward movement of the support plate 2. When the support plate 2 is in position, the spring teeth 20 engage with the serrated bar 18 to achieve positioning and locking. At this time, the support plate 2 can be reliably supported on the upper edge of the pool without the support plate 2 moving upwards.

[0058] The escalator body 1 is equipped with a tread 17, with T-shaped mounting heads 21 at both ends. The escalator body 1 has a mounting groove 22 and a clearance groove 23. The mounting groove 22 is T-shaped, and the clearance groove 23 is located above the mounting groove 22 and is connected to it. Both the mounting groove 22 and the clearance groove 23 are located on the upright plate 16 and penetrate through it. The mounting head 21 is first inserted into the clearance groove 23, then slides downwards and engages with the mounting groove 22. A reinforcing rib 24 is embedded on the lower surface of the tread 17, with both ends of the reinforcing rib 24 supported in the two mounting grooves 22. A support protrusion 25 is located below the tread 17 on the escalator body 1, and the support protrusion 25 is located on the upright plate 16, with the edge of the tread 17 supported on the support protrusion 25.

[0059] The escalator is used in conjunction with a water tank. After the escalator is installed, the height of the support plate 2 is adjusted by raising and lowering it, so that the support plate 2 rests against the upper edge of the water tank. The support plate 2 serves as an auxiliary support for the escalator, which helps to improve the stability of the escalator. Because the support plate 2 can be raised and lowered, it can be used with water tanks of different heights.

[0060] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A stable water tank escalator structure, comprising an escalator body, characterized in that, The upper part of the escalator body is equipped with a support plate that can be raised and lowered and moved, and the support plate is supported on the upper edge of the pool. Fixed side plates are set on the escalator body and corresponding to the support plate. The support plate is raised and lowered and installed on the fixed side plates. The fixed side plates and the support plate are locked together by a locking mechanism.

2. The stable water tank ladder structure according to claim 1, characterized in that, The lower edge of the support plate is provided with a support groove, which is inserted into the upper edge of the pool.

3. The stable water tank ladder structure according to claim 1, characterized in that, The locking mechanism includes a serrated bar and a spring plate. The spring plate is provided with spring teeth. The support plate moves up and down along the length of the serrated bar, and the spring teeth are engaged with the serrated bar to achieve positioning and locking.

4. The stable water tank ladder structure according to claim 1, characterized in that, The locking mechanism includes a horizontal screw and a vertical screw. The horizontal screw is threaded onto the support plate, and the vertical screw is threaded onto the fixed side plate. After the support plate moves down into place, tighten the horizontal screw so that it abuts against the fixed side plate, and tighten the vertical screw so that it pushes against the upper part of the support plate.

5. The stable water tank ladder structure according to claim 1, characterized in that, A sliding groove is provided on the fixed side plate, and a slider is provided on the support plate. An anti-disengagement hook is provided on the slider. The slider is slidably connected to the sliding groove, and the anti-disengagement hook is locked at the opening end of the sliding groove.

6. The stable water tank ladder structure according to claim 1, characterized in that, The escalator body is equipped with a top plate, and support plates are set on the left and right sides of the top plate. "X"-shaped reinforcing ribs are embedded on the lower surface of the top plate.

7. A stable water tank ladder structure according to any one of claims 1 to 6, characterized in that, The escalator body is equipped with treads, and T-shaped mounting heads are provided at both ends of the treads. The escalator body is provided with mounting grooves and clearance grooves. The mounting grooves are T-shaped. The mounting heads are first inserted into the clearance grooves, and then slid and snapped into the mounting grooves.

8. The stable water tank ladder structure according to claim 7, characterized in that, A reinforcing rib is embedded on the lower surface of the pedal, with each end of the rib supported in a mounting groove.

9. A stable water tank ladder structure according to claim 7, characterized in that, A support protrusion is provided on the escalator body below the step, and the edge of the step is supported on the support protrusion.

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