Auxiliary support for overhauling heating surface of boiler

Abstract

A boiler heating surface maintenance auxiliary support comprises a bottom plate, a movable supporting mechanism arranged on the side wall of the bottom plate, a height adjusting mechanism arranged on the top face of the bottom plate and a mounting plate arranged on the height adjusting mechanism. The movable supporting mechanism comprises supporting legs, universal wheels, first sliding blocks, connecting rods and a supporting seat, the supporting legs are fixedly arranged on the side wall of the bottom plate, the universal wheels are fixedly arranged at the bottom ends of the supporting legs, first sliding grooves are formed in the supporting legs, and the first sliding blocks are inserted into the first sliding grooves and slide along the first sliding grooves; the two ends of the first sliding block penetrate through the side walls of the supporting legs and are fixedly connected with the two connecting rods, and the supporting base is fixedly arranged at the bottom ends of the two connecting rods. The supporting base, the supporting legs, the first sliding blocks and the connecting rods are used in cooperation, the supporting base is lowered to support the support, the support is prevented from deviating under the action of external force, meanwhile, the moving wheels are protected, and the stability of the support is improved.

Description

Technical Field

[0001] This utility model relates to the field of boiler maintenance technology, and more specifically, to an auxiliary support for boiler heating surface maintenance. Background Technology

[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy of fuel and electrical energy. The boiler outputs steam, high-temperature water, or organic heat carriers with a certain amount of thermal energy. The boiler heating surface usually refers to the metal surface in contact with the flame or flue gas, therefore, the boiler heating surface needs to be cleaned and inspected regularly.

[0003] Patent CN221991382U discloses an auxiliary support for boiler heating surface maintenance, including a base. A fixed seat is fixedly connected to the upper end of the base. A first movable seat is slidably mounted on the fixed seat, and a second movable seat is slidably mounted on the first movable seat. When the height of the mounting bracket needs to be adjusted, the first lifting component in this patent will drive the first movable seat to move upward along the fixed seat, and the second lifting component will drive the second movable seat to move upward along the first movable seat. This two-stage height adjustment extends the overall detectable height of the mounting bracket, reducing or avoiding situations where the bracket cannot be detected due to excessive height. When carrying, the second movable seat is retracted into the first movable seat, and the first movable seat is retracted into the second movable seat, so that the carrying height is the length of the fixed seat, making it convenient to carry. However, although this patent provides universal casters to facilitate movement by workers, relying solely on universal casters for support makes it prone to displacement under external forces, resulting in poor stability. Utility Model Content

[0004] This invention aims to overcome the problem of easy displacement and poor stability under external forces by providing an auxiliary support for boiler heating surface maintenance.

[0005] A boiler heating surface maintenance auxiliary support includes a base plate, a movable support mechanism disposed on the side wall of the base plate, a height adjustment mechanism disposed on the top surface of the base plate, and a mounting plate disposed on the height adjustment mechanism.

[0006] The mobile support mechanism includes outriggers, casters, a first slider, connecting rods, and a support base. The outriggers are fixedly mounted on the side wall of the base plate, the casters are fixedly mounted on the bottom end of the outriggers, a first groove is provided inside the outriggers, the first slider is inserted into the first groove and slides along the first groove, both ends of the first slider pass through the side wall of the outriggers and are fixedly connected to two connecting rods, and the support base is fixedly mounted on the bottom end of the two connecting rods.

[0007] Furthermore, the mobile support mechanism also includes a first one-way screw, a first handle, and a first positioning component. The first one-way screw is inserted into the first slide groove and is rotatably connected to the support leg. The first slider is sleeved on the first one-way screw and slides along the first slide groove through the first one-way screw. The top end of the first one-way screw penetrates the top surface of the support leg and is fixedly connected to the first handle. The first positioning component is disposed between the first handle and the support leg.

[0008] Furthermore, the first positioning component includes a pull rod, a baffle, and an insert block. The pull rod passes through the first handle and slides along the first handle. The baffle is fixedly disposed at the bottom end of the pull rod. The top end of the insert block is fixedly connected to the bottom surface of the baffle, and the bottom end of the insert block is inserted into the leg.

[0009] Furthermore, the first positioning component also includes a spring, which is sleeved on the pull rod, with the top end of the spring fixedly connected to the bottom surface of the first handle and the bottom end of the spring fixedly connected to the top surface of the baffle.

[0010] Furthermore, a handle for pulling the lever is fixedly installed at the top of the lever.

[0011] Furthermore, the bottom surface of the support base is covered with an anti-slip pad to prevent the bracket from shifting.

[0012] Furthermore, the height adjustment mechanism includes a vertical frame, a vertical rod, and a second slider. The vertical frame is fixedly installed on the top surface of the base plate, the vertical rod is inserted into the vertical frame and slides along the vertical frame, and a second sliding groove is opened on both sides inside the vertical frame. One end of the second slider is fixedly connected to the side wall of the vertical rod, and the other end of the second slider is inserted into the second sliding groove and slides along the second sliding groove. The mounting plate is fixedly installed on the top of the vertical rod.

[0013] Furthermore, the height adjustment mechanism also includes a second one-way lead screw, a first bevel gear, a rotating rod, a second bevel gear, a worm gear, a worm, a second handle, and a second positioning assembly. The second one-way lead screw is inserted into the second slide groove and rotatably connected to the vertical frame. The second slider is sleeved on the second one-way lead screw and slides along the second slide groove via the second one-way lead screw. A groove is provided at the top of the vertical frame. The top of the second one-way lead screw passes through the groove and is fixedly connected to the first bevel gear. The rotating rod is inserted into the groove and rotatably connected to the vertical frame. The second bevel gear is sleeved on the rotating rod and fixedly connected to the rotating rod. The first bevel gear and the second bevel gear mesh with each other. A support plate is fixedly installed at the top of the side wall of the vertical frame. One end of the rotating rod passes through the side wall of the vertical frame and is inserted into the support plate and rotatably connected to the support plate. The worm gear is sleeved on the rotating rod and fixedly connected to the rotating rod. The worm is inserted on the support plate and rotatably connected to the support plate. The worm gear and the worm mesh with each other. One end of the worm passes through the side wall of the support plate and is fixedly connected to the second handle. The second positioning assembly is disposed between the vertical frame and the second slider.

[0014] Furthermore, the second positioning component includes a positioning frame, a third slider, and a positioning block. A third sliding groove is provided on the side wall of the vertical frame, which is connected to the second sliding groove. One end of the positioning frame is fixedly connected to the side wall of the second slider, and the other end of the positioning frame passes through the third sliding groove and slides along the third sliding groove. The third slider is inserted into the positioning frame and slides along the positioning frame. The positioning block is fixedly set on the side wall of the third slider. A plurality of insertion holes are provided on the side wall of the vertical frame, and the positioning block passes through the insertion holes and is inserted into the second slider.

[0015] Furthermore, the second positioning component also includes a third one-way lead screw and a third handle. The third one-way lead screw is inserted inside the positioning frame and is rotatably connected to the positioning frame. The third slider is sleeved on the third one-way lead screw and slides along the positioning frame through the third one-way lead screw. One end of the third one-way lead screw passes through the side wall of the positioning frame and is fixedly connected to the third handle.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] ①The boiler heating surface maintenance auxiliary support provided by this utility model uses a support base, outriggers, first slider and connecting rod to support the support base when it is lowered, preventing the support from shifting under external force, while protecting the moving wheels and improving the stability of the support.

[0018] ②The boiler heating surface maintenance auxiliary support provided by this utility model, by setting up a tie rod, a baffle and a plug, the tie rod and the baffle work together to make the plug insert into the support leg to lock the first handle, thereby improving the stability of the support.

[0019] ③ The boiler heating surface maintenance auxiliary support provided by this utility model, by setting a positioning frame, a third slider and a positioning block, the positioning block is inserted into the interior of the second slider through the through hole between the third slider and the positioning frame, fixing the position between the second slider and the vertical frame, thereby improving the stability of the support. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the auxiliary support for boiler heating surface maintenance in this utility model.

[0022] Figure 2 This is a schematic diagram of the specific structure of the mobile support mechanism in this utility model.

[0023] Figure 3 This is a schematic diagram of the specific structure of the height adjustment mechanism in this utility model.

[0024] Figure 4 This is a cross-sectional view of the internal structure of the groove in this utility model.

[0025] In the diagram: 1. Base plate; 2. Mounting plate; 3. Support leg; 4. Caster wheel; 5. First slider; 6. Connecting rod; 7. Support base; 8. First slide groove; 9. First one-way lead screw; 10. First handle; 11. Pull rod; 12. Baffle; 13. Insert block; 14. Spring; 15. Pull handle; 16. Anti-slip pad; 17. Vertical frame; 18. Vertical rod; 19. Second slider; 20. Second slide groove; 21. Second one-way lead screw; 22. First bevel gear; 23. Rotating rod; 24. Second bevel gear; 25. Worm gear; 26. Worm; 27. Second handle; 28. Groove; 29. ​​Support plate; 30. Positioning frame; 31. Third slider; 32. Positioning block; 33. Third slide groove; 34. Insertion hole; 35. Third one-way lead screw; 36. Third handle. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1 As shown, a boiler heating surface maintenance auxiliary support includes a base plate 1, a movable support mechanism disposed on the side wall of the base plate 1, a height adjustment mechanism disposed on the top surface of the base plate 1, and a mounting plate 2 disposed on the height adjustment mechanism. Specifically, the side wall of the base plate 1 is provided with a movable support mechanism, the top surface of the base plate 1 is provided with a height adjustment mechanism, and the height adjustment mechanism is provided with a mounting plate 2. A metal detection flaw detector is mounted on the mounting plate 2 by screws.

[0028] like Figure 2 As shown, the movable support mechanism includes a support leg 3, a caster wheel 4, a first slider 5, a connecting rod 6, and a support base 7. The support leg 3 is fixedly mounted on the side wall of the base plate 1, the caster wheel 4 is fixedly mounted on the bottom end of the support leg 3, a first groove 8 is formed inside the support leg 3, the first slider 5 is inserted into the first groove 8 and slides along the first groove 8, both ends of the first slider 5 penetrate through the side wall of the support leg 3 and are fixedly connected to the two connecting rods 6, and the support base 7 is fixedly mounted on the bottom end of the two connecting rods 6. Specifically, the support leg 3 is welded to the side wall of the base plate 1, the caster wheel 4 is welded to the bottom end of the support leg 3, the first groove 8 is formed inside the support leg 3, the first slider 5 is inserted into the first groove 8 and slides along the first groove 8, both ends of the first slider 5 penetrate through the side wall of the support leg 3 and are welded to the two connecting rods 6, and the support base 7 is welded to the bottom end of the two connecting rods 6.

[0029] In this utility model, by setting a support base 7, the support leg 3, the first slider 5 and the connecting rod 6 are used in cooperation to lower the support base 7 to support the bracket, prevent the bracket from shifting under the action of external force, protect the moving wheels and improve the stability of the bracket.

[0030] The mobile support mechanism also includes a first one-way screw 9, a first handle 10, and a first positioning component. The first one-way screw 9 is inserted into the first slide groove 8 and is rotatably connected to the support leg 3. The first slider 5 is sleeved on the first one-way screw 9 and slides along the first slide groove 8 through the first one-way screw 9. The top end of the first one-way screw 9 penetrates the top surface of the support leg 3 and is fixedly connected to the first handle 10. The first positioning component is disposed between the first handle 10 and the support leg 3. Specifically, the first one-way screw 9 is inserted into the first slide groove 8 and is rotatably connected to the support leg 3. The first slider 5 has a through hole. The first slider 5 is sleeved on the first one-way screw 9 through the through hole and slides along the first slide groove 8 through the first one-way screw 9. The top end of the first one-way screw 9 penetrates the top surface of the support leg 3 and is welded to the first handle 10. The first positioning component is disposed between the first handle 10 and the support leg 3.

[0031] The first positioning component includes a pull rod 11, a baffle 12, and an insert 13. The pull rod 11 passes through the first handle 10 and slides along the first handle 10. The baffle 12 is fixedly disposed at the bottom end of the pull rod 11. The top end of the insert 13 is fixedly connected to the bottom surface of the baffle 12. The bottom end of the insert 13 is inserted into the interior of the support leg 3. Specifically, the pull rod 11 passes through the first handle 10 and slides along the first handle 10. The bottom end of the pull rod 11 is welded with the baffle 12. The top end of the insert 13 is welded to the bottom surface of the baffle 12. The bottom end of the insert 13 is inserted into the interior of the support leg 3.

[0032] In this utility model, by setting a pull rod 11, a baffle 12 and an insert 13, the pull rod 11 and the baffle 12 cooperate to insert the insert 13 into the support leg 3 to lock the first handle 10, thereby improving the stability of the bracket.

[0033] The first positioning component also includes a spring 14, which is sleeved on the pull rod 11. The top end of the spring 14 is fixedly connected to the bottom surface of the first handle 10, and the bottom end of the spring 14 is fixedly connected to the top surface of the baffle 12. Specifically, the pull rod 11 is sleeved with a spring 14, the top end of the spring 14 is welded to the bottom surface of the first handle 10, and the bottom end of the spring 14 is welded to the top surface of the baffle 12.

[0034] A handle 15 for pulling the lever 11 is fixedly provided at the top end of the lever 11. Specifically, a handle 15 is welded to the top end of the lever 11 for pulling the lever 11.

[0035] The bottom surface of the support base 7 is provided with an anti-slip pad 16 to prevent the bracket from shifting. Specifically, the bottom surface of the support base 7 is provided with an anti-slip pad 16 to prevent the bracket from shifting.

[0036] like Figure 3 , Figure 4 As shown, the height adjustment mechanism includes a vertical frame 17, a vertical rod 18, and a second slider 19. The vertical frame 17 is fixedly installed on the top surface of the base plate 1. The vertical rod 18 is inserted into the interior of the vertical frame 17 and slides along the vertical frame 17. Second sliding grooves 20 are provided on both sides of the interior of the vertical frame 17. One end of the second slider 19 is fixedly connected to the side wall of the vertical rod 18, and the other end of the second slider 19 is inserted into the interior of the second sliding groove 20 and slides along the second sliding groove 20. The mounting plate 2 is fixedly installed on the top of the vertical rod 18. Specifically, the top surface of the base plate 1 is welded with the vertical frame 17, the vertical rod 18 is inserted into the interior of the vertical frame 17 and slides along the vertical frame 17, the interior of the vertical frame 17 is provided on both sides, one end of the second slider 19 is welded to the side wall of the vertical rod 18, and the other end of the second slider 19 is inserted into the interior of the second sliding groove 20 and slides along the second sliding groove 20. The top of the vertical rod 18 is welded with the mounting plate 2.

[0037] The height adjustment mechanism also includes a second one-way lead screw 21, a first bevel gear 22, a rotating rod 23, a second bevel gear 24, a worm gear 25, a worm 26, a second handle 27, and a second positioning assembly. The second one-way lead screw 21 is inserted into the second slide groove 20 and rotatably connected to the vertical frame 17. The second slider 19 is sleeved on the second one-way lead screw 21 and slides along the second slide groove 20 via the second one-way lead screw 21. A groove 28 is provided at the top of the vertical frame 17. The top of the second one-way lead screw 21 passes through the groove 28 and is fixedly connected to the first bevel gear 22. The rotating rod 23 is inserted into the groove 28 and rotatably connected to the vertical frame 17. The first bevel gear 22 and the second bevel gear 24 are meshed together. A support plate 29 is fixedly installed at the top of the side wall of the vertical frame 17. One end of the rotating rod 23 passes through the side wall of the vertical frame 17 and is inserted into the support plate 29 and rotatably connected to the support plate 29. A worm gear 25 is sleeved on the rotating rod 23 and is fixedly connected to the rotating rod 23. A worm 26 is inserted into the support plate 29 and rotatably connected to the support plate 29. The worm gear 25 and the worm 26 mesh together. One end of the worm 26 passes through the side wall of the support plate 29 and is fixedly connected to the second handle 27. The positioning component is located between the vertical frame 17 and the second slider 19. Specifically, the second one-way screw 21 is inserted into the second slide groove 20 and rotatably connected to the vertical frame 17. The second slider 19 has a through hole, through which it is fitted onto the second one-way screw 21 and slides along the second slide groove 20. The top of the vertical frame 17 has a groove 28, through which the top of the second one-way screw 21 passes and is welded to the first bevel gear 22. The rotating rod 23 is inserted into the groove 28 and rotatably connected to the vertical frame 17. The second bevel gear 24 is fitted onto the rotating rod 23. The upper part is welded to the rotating rod 23. The first bevel gear 22 and the second bevel gear 24 mesh with each other. The top of the side wall of the vertical frame 17 is welded to the support plate 29. One end of the rotating rod 23 passes through the side wall of the vertical frame 17 and is inserted into the interior of the support plate 29 and rotatably connected to the support plate 29. The worm gear 25 is sleeved on the rotating rod 23 and welded to the rotating rod 23. The worm 26 is inserted on the support plate 29 and rotatably connected to the support plate 29. The worm gear 25 and the worm 26 mesh with each other. One end of the worm 26 passes through the side wall of the support plate 29 and is welded to the second handle 27. A second positioning component is provided between the vertical frame 17 and the second slider 19.

[0038] The second positioning component includes a positioning frame 30, a third slider 31, and a positioning block 32. A third sliding groove 33 is provided on the side wall of the vertical frame 17, and the third sliding groove 33 is connected to the second sliding groove 20. One end of the positioning frame 30 is fixedly connected to the side wall of the second slider 19, and the other end of the positioning frame 30 passes through the third sliding groove 33 and slides along the third sliding groove 33. The third slider 31 is inserted into the positioning frame 30 and slides along the positioning frame 30. The positioning block 32 is fixedly disposed on the side wall of the third slider 31. Several insertion holes 34 are provided on the side wall of the vertical frame 17, and the positioning block 32 passes through the insertion holes 34 and is inserted into the third slider 31. Inside the second slider 19, specifically, the side wall of the vertical frame 17 is provided with a third sliding groove 33, which is connected to the second sliding groove 20. One end of the positioning frame 30 is welded to the side wall of the second slider 19, and the other end of the positioning frame 30 passes through the third sliding groove 33 and slides along the third sliding groove 33. The third slider 31 is inserted into the inside of the positioning frame 30 and slides along the positioning frame 30. A positioning block 32 is welded to the side wall of the third slider 31. Several insertion holes 34 are provided on the side wall of the vertical frame 17. The positioning block 32 passes through the insertion holes 34 and is inserted into the inside of the second slider 19.

[0039] The second positioning assembly also includes a third one-way lead screw 35 and a third handle 36. The third one-way lead screw 35 is inserted into the positioning frame 30 and rotatably connected to the positioning frame 30. The third slider 31 is sleeved on the third one-way lead screw 35 and slides along the positioning frame 30 through the third one-way lead screw 35. One end of the third one-way lead screw 35 passes through the side wall of the positioning frame 30 and is fixedly connected to the third handle 36. Specifically, the third one-way lead screw 35 is inserted into the positioning frame 30 and rotatably connected to the positioning frame 30. The third slider 31 has a through hole. The third slider 31 is sleeved on the third one-way lead screw 35 through the through hole and slides along the positioning frame 30 through the third one-way lead screw 35. One end of the third one-way lead screw 35 passes through the side wall of the positioning frame 30 and is welded to the third handle 36.

[0040] The working principle of the boiler heating surface maintenance auxiliary support in this embodiment is as follows:

[0041] In use, the metal detector is mounted on the mounting plate 2 with screws. The operator moves the bracket to the designated position using the casters 4, pulls the handle 15, and the pull rod 11 slides along the first rotary handle 10. The baffle 12 moves with the pull rod 11, and the insert block 13 moves with the baffle 12 to extend the support leg 3. Rotating the first rotary handle 10 causes the first one-way screw 9 to rotate with the first rotary handle 10, and the first slider 5 slides along the first slide groove 8 with the first one-way screw 9. The connecting rod 6 moves with the first slider 5, and the support base... 7. As the connecting rod 6 moves, the anti-slip pad 16 moves with the support base 7 until it contacts the ground. The pull rod 11 slides along the first handle 10 under the thrust of the spring 14. The baffle 12 moves with the pull rod 11, and the insert block 13 moves with the baffle 12 and inserts into the support leg 3, locking the first handle 10. When it is necessary to adjust the height of the mounting plate 2, the third handle 36 is rotated. The third one-way screw 35 rotates with the third handle 36, and the third slider 31 rotates with the third one-way screw 35 and slides along the positioning frame 30. 32 moves with the third slider 31 to pull out the insertion hole 34. The second handle 27 is rotated, causing the worm gear 26 to rotate with the second handle 27, the worm wheel 25 to rotate with the worm gear 26, the rotating rod 23 to rotate with the worm wheel 25, the second bevel gear 24 to rotate with the rotating rod 23, the first bevel gear 22 to rotate with the second bevel gear 24, the second one-way lead screw 21 to rotate with the first bevel gear 22, the second slider 19 to rotate with the second one-way lead screw 21 and slide along the second slide groove 20, and the positioning frame 30 to slide along the third slide groove 33 with the second slider 19. The vertical rod 18 extends out of the vertical frame 17 along with the second slider 19. The mounting plate 2 moves with the vertical rod 18. The metal detector moves to the designated height with the mounting plate 2. The third handle 36 is rotated, and the third one-way screw 35 rotates with the third handle 36. The third slider 31 rotates with the third handle 36 and slides along the positioning frame 30. The positioning block 32 moves with the third slider 31 and passes through the insertion hole 34 to enter the interior of the second slider 19, fixing the position between the vertical frame 17 and the second slider 19. The metal detector is then turned on for maintenance.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A boiler heating surface overhauling auxiliary support, characterized in that: The utility model provides a height adjustable mobile support mechanism, including bottom plate (1), the mobile support mechanism of setting in the side wall of bottom plate (1), height adjusting mechanism and mounting plate (2) of setting in the top surface of bottom plate (1) and setting on height adjusting mechanism are set up on the mounting plate (2) of height adjusting mechanism, The mobile support mechanism includes a supporting leg (3), a universal wheel (4), a first sliding block (5), a connecting rod (6), and a supporting seat (7). The supporting leg (3) is fixedly arranged on the side wall of the bottom plate (1). The universal wheel (4) is fixedly arranged on the bottom end of the supporting leg (3). The supporting leg (3) is internally provided with a first sliding groove (8). The first sliding block (5) is inserted into the first sliding groove (8) and slides along the first sliding groove (8). The two ends of the first sliding block (5) penetrate through the side wall of the supporting leg (3) and are fixedly connected with the two connecting rods (6). The supporting seat (7) is fixedly arranged on the bottom end of the two connecting rods (6).

2. The auxiliary support bracket for boiler heating surface maintenance according to claim 1, characterized in that: The mobile support mechanism further includes a first one-way screw rod (9), a first rotating handle (10), and a first positioning assembly. The first one-way screw rod (9) is inserted into the first sliding groove (8) and rotationally connected with the supporting leg (3). The first sliding block (5) is sleeved on the first one-way screw rod (9) and slides along the first sliding groove (8) through the first one-way screw rod (9). The top end of the first one-way screw rod (9) penetrates through the top surface of the supporting leg (3) and is fixedly connected with the first rotating handle (10). The first positioning assembly is arranged between the first rotating handle (10) and the supporting leg (3).

3. The auxiliary support bracket for boiler heating surface maintenance according to claim 2, characterized in that: The first positioning assembly includes a pull rod (11), a blocking piece (12), and an insertion block (13). The pull rod (11) penetrates through the first rotating handle (10) and slides along the first rotating handle (10). The blocking piece (12) is fixedly arranged on the bottom end of the pull rod (11). The top end of the insertion block (13) is fixedly connected with the bottom surface of the blocking piece (12). The bottom end of the insertion block (13) is inserted into the supporting leg (3).

4. The auxiliary support bracket for boiler heating surface maintenance according to claim 3, characterized in that: The first positioning assembly further includes a spring (14). The spring (14) is sleeved on the pull rod (11). The top end of the spring (14) is fixedly connected with the bottom surface of the first rotating handle (10). The bottom end of the spring (14) is fixedly connected with the top surface of the blocking piece (12).

5. The auxiliary support bracket for boiler heating surface maintenance according to claim 3, characterized in that: The top end of the pull rod (11) is fixedly provided with a pulling handle (15) for pulling the pull rod (11).

6. The auxiliary support bracket for boiler heating surface maintenance according to claim 1, characterized in that: The bottom surface of the supporting seat (7) is attached with a non-slip pad (16) for preventing the bracket from deviating.

7. The auxiliary support bracket for boiler heating surface maintenance according to claim 1, characterized in that: The height adjusting mechanism includes a vertical frame (17), a vertical rod (18), and a second sliding block (19). The vertical frame (17) is fixedly arranged on the top surface of the bottom plate (1). The vertical rod (18) is inserted into the vertical frame (17) and slides along the vertical frame (17). The vertical frame (17) is internally provided with second sliding grooves (20) on both sides. One end of the second sliding block (19) is fixedly connected with the side wall of the vertical rod (18). The other end of the second sliding block (19) is inserted into the second sliding grooves (20) and slides along the second sliding grooves (20). The mounting plate (2) is fixedly arranged on the top end of the vertical rod (18).

8. The auxiliary support bracket for boiler heating surface maintenance according to claim 7, characterized in that: The height adjusting mechanism further comprises a second one-way screw rod (21), a first bevel gear (22), a rotating rod (23), a second bevel gear (24), a worm wheel (25), a worm (26), a second rotating handle (27) and a second positioning assembly, the second one-way screw rod (21) is inserted into the second sliding groove (20) and is rotationally connected with the vertical frame (17), the second sliding block (19) is sleeved on the second one-way screw rod (21) and slides along the second sliding groove (20) through the second one-way screw rod (21), a recess (28) is formed at the top end of the vertical frame (17), the top end of the second one-way screw rod (21) penetrates into the recess (28) and is fixedly connected with the first bevel gear (22), the rotating rod (23) is inserted into the recess (28) and is rotationally connected with the vertical frame (17), the second bevel gear (24) is sleeved on the rotating rod (23) and is fixedly connected with the rotating rod (23), the first bevel gear (22) and the second bevel gear (24) are in mesh with each other, a support plate (29) is fixedly arranged at the top end of the side wall of the vertical frame (17), one end of the rotating rod (23) penetrates through the side wall of the vertical frame (17) and is inserted into the support plate (29) and is rotationally connected with the support plate (29), the worm wheel (25) is sleeved on the rotating rod (23) and is fixedly connected with the rotating rod (23), the worm (26) is inserted into the support plate (29) and is rotationally connected with the support plate (29), the worm wheel (25) and the worm (26) are in mesh with each other, one end of the worm (26) penetrates through the side wall of the support plate (29) and is fixedly connected with the second rotating handle (27), and the second positioning assembly is arranged between the vertical frame (17) and the second sliding block (19).

9. The auxiliary support bracket for boiler heating surface maintenance according to claim 8, characterized in that: The second positioning assembly comprises a positioning frame (30), a third sliding block (31) and a positioning block (32), a third sliding groove (33) is formed in the side wall of the vertical frame (17) and is communicated with the second sliding groove (20), one end of the positioning frame (30) is fixedly connected with the side wall of the second sliding block (19), the other end of the positioning frame (30) penetrates through the third sliding groove (33) and slides along the third sliding groove (33), the third sliding block (31) is inserted into the positioning frame (30) and slides along the positioning frame (30), and the positioning block (32) is fixedly arranged on the side wall of the third sliding block (31), a plurality of insertion holes (34) are formed in the side wall of the vertical frame (17), and the positioning block (32) penetrates through the insertion holes (34) and is inserted into the second sliding block (19).

10. The auxiliary support bracket for boiler heating surface maintenance according to claim 9, characterized in that: The second positioning assembly further comprises a third one-way screw rod (35) and a third rotating handle (36), the third one-way screw rod (35) is inserted into the positioning frame (30) and rotationally connected with the positioning frame (30), the third sliding block (31) is sleeved on the third one-way screw rod (35) and slides along the positioning frame (30) through the third one-way screw rod (35), one end of the third one-way screw rod (35) penetrates through the side wall of the positioning frame (30) and is fixedly connected with the third rotating handle (36).

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