A sootblower front end overtravel protection device

Abstract

A sootblower front end overtravel protection device comprises a sootblower beam (1) and a rack (2), wherein the rack (2) is mounted on the bottom of the sootblower beam (1), a sports car driving gear (3) meshes with the rack (2), a movable rack (4) is provided at the end of the sports car driving gear (3), a rack avoidance groove (5) is provided on the sootblower beam (1), the top of the movable rack (4) is mounted in the rack avoidance groove (5) via an A return spring (6), and one end of the movable rack (4) is movably mounted on the rack (2) via a rotating shaft (7); the advantage is that when a limit switch fails, the sports car is stopped by the movable rack, thereby preventing weak parts on the sports car from being easily damaged.

Description

Technical Field

[0001] The invention relates to the field of boiler sootblower equipment, and in particular to a sootblower front end overtravel protection device. Background Art

[0002] Currently, existing sootblowers have brake pads welded to the front end of the rack. When the sports car hits a limit switch, it reverses. However, if the limit switch fails, the sports car will hit the brake pad, forcing it to stop. This increases the current in the sports car's motor, easily burning out vital components like thermocouples within the motor and damaging vulnerable parts of the sports car. In this case, the sports car must be disassembled for repair, increasing subsequent maintenance costs. Summary of the Invention

[0003] The purpose of the present invention is to provide a sootblower front end overtravel protection device in view of the above-mentioned deficiencies.

[0004] The present invention comprises a sootblower beam and a rack, wherein the rack is mounted at the bottom of the sootblower beam, and a driving gear of the sports car is engaged with the rack.

[0005] A movable rack is provided at the end of the sports car driving gear, a rack avoidance groove is opened on the sootblower beam, the top of the movable rack is installed in the rack avoidance groove through a return spring A, and one end of the movable rack is movably installed on the rack through a rotating shaft.

[0006] A spring mounting hole is opened in the rack avoidance groove, one end of the A return spring is fixed to the top of the movable rack, and the other end of the A return spring is installed in the spring mounting hole of the rack avoidance groove.

[0007] A limit block is provided at the bottom of the sootblower beam, one side of the limit block is a rack accommodating area, and when the movable rack is horizontal, the other end of the movable rack is located in the rack accommodating area.

[0008] A double-ear seat is provided at one end of the movable rack, and an oblong hole is opened on the double-ear seat for adjusting the position of the movable rack. The rotating shaft passes through the oblong hole to movably install the double-ear seat on the rack. A spring mounting hole is opened at the end of the rack. A B return spring is provided on the movable rack between the pair of double-ear seats, and the end of the B return spring is installed in the spring mounting hole of the rack.

[0009] The rotating shaft is a pin.

[0010] The rack avoidance groove is a rectangular groove.

[0011] A pair of teeth is provided at the bottom of the movable rack.

[0012] The limit block is welded to the bottom of the sootblower beam.

[0013] The rack is detachably mounted on the bottom of the sootblower beam by bolts.

[0014] The invention has the advantages that when the limit switch fails, the sports car is stopped by the movable rack, thereby preventing weak parts on the sports car from being easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 It is a partially enlarged structural diagram of the driving gear and movable rack of the present invention.

[0017] Figure 3 It is a schematic cross-sectional structural diagram of the present invention.

[0018] Figure 4 It is a structural schematic diagram of the present invention in which the driving gear and the movable rack are fully engaged.

[0019] Figure 5 It is a schematic structural diagram of the present invention in which the driving gear squeezes the movable rack backward.

[0020] Figure 6 It is a structural schematic diagram of the present invention in which the driving gear pushes the movable rack upward. Implementation Method

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0024] In the description of the embodiments of the present invention, it should be noted that if the terms "upper," "lower," "inner," "outer," etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. These terms are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limitations on the present invention. In addition, if the terms "first," "second," etc. appear in the description of the present invention, they are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0026] As shown in the accompanying drawings, the present invention comprises a sootblower beam 1 and a rack 2. The rack 2 is mounted at the bottom of the sootblower beam 1. The sports car driving gear 3 is meshed with the rack 2.

[0027] A movable rack 4 is provided at the end of the sports car driving gear 3, a rack avoidance groove 5 is opened on the sootblower beam 1, the top of the movable rack 4 is installed in the rack avoidance groove 5 through a return spring A 6, and one end of the movable rack 4 is movably installed on the rack 2 through a rotating shaft 7.

[0028] A spring mounting hole is opened in the rack avoidance groove 5, one end of the A return spring 6 is fixed to the top of the movable rack 4, and the other end of the A return spring 6 is installed in the spring mounting hole of the rack avoidance groove 5.

[0029] A limit block 8 is provided at the bottom of the sootblower beam 1 , and one side of the limit block 8 is a rack accommodating area 9 . When the movable rack 4 is horizontal, the other end of the movable rack 4 is located in the rack accommodating area 9 .

[0030] A double-ear seat 10 is provided at one end of the movable rack 4. An oblong hole 11 is opened on the double-ear seat 10 for adjusting the position of the movable rack 4. The rotating shaft 7 passes through the oblong hole 11 to movably mount the double-ear seat 10 on the rack 2. A spring mounting hole is opened at the end of the rack 2. A B return spring 12 is provided on the movable rack 4 between a pair of double-ear seats 10. The end of the B return spring 12 is installed in the spring mounting hole of the rack 2.

[0031] The rotating shaft 7 is a pin.

[0032] The rack avoidance groove 5 is a rectangular groove.

[0033] A pair of teeth is provided at the bottom of the movable rack 4.

[0034] The limiting block 8 is welded to the bottom of the sootblower beam 1 .

[0035] The rack 2 is detachably mounted on the bottom of the sootblower beam 1 by bolts.

[0036] Example 1: When the sootblower sports car moves to the adjacent Figure 4 Position, at this time the sports car driving gear 3 is fully engaged with the movable rack 4. When the sports car driving gear 3 continues to move forward, as shown in the attached Figure 5 As shown, when the sports car driving gear 3 moves forward, it pushes the movable rack 4 backward, and the movable rack 4 moves out of the rack accommodating area 9. The movable rack 4 compresses the B return spring 12. The shaft 7 is now located at the front end of the oblong hole 11. At this time, the sports car driving gear 3 continues to rotate, pushing the movable rack 4 upward. The movable rack 4 compresses the A return spring 6, and the movable rack 4 rotates around the shaft 7 to the adjacent Figure 6 Position, at this time, when the sports car driving gear 3 rotates again, it will only contact the end teeth of the movable rack 4, the sports car driving gear 3 idles, the sootblower sports car no longer moves forward, achieving the purpose of stopping the sports car and preventing damage to the weak parts of the sports car. When the sports car returns, the sports car driving gear 3 reverses, and the movable rack 4 returns to the adjacent position under the reaction force of the B return spring 12. Figure 5 Position, the movable rack 4 is horizontal with the rack 2, at this time the sports car driving gear 3 immediately engages with the movable rack 4, and then the movable rack 4 is pressed against the rack accommodating area 9 under the reaction force of the A return spring 6, and the sports car driving gear 3 drives the sports car to return quickly.

Claims

1. A sootblower front end overtravel protection device, comprising a sootblower beam (1) and a rack (2), wherein the rack (2) is mounted on the bottom of the sootblower beam (1), and a sports car driving gear (3) is meshed with the rack (2). It is characterized by A movable rack (4) is provided at the end of the sports car driving gear (3); a rack avoidance groove (5) is provided on the sootblower beam (1); the top of the movable rack (4) is installed in the rack avoidance groove (5) through an A reset spring (6); one end of the movable rack (4) is movably installed on the rack (2) through a rotating shaft (7); a double-ear seat (10) is provided at one end of the movable rack (4); an oblong hole (11) for adjusting the position of the movable rack (4) is provided on the double-ear seat (10); the rotating shaft (7) passes through the oblong hole (11) to movably install the double-ear seat (10) on the rack (2); a spring mounting hole is provided at the end of the rack (2); a B reset spring (12) is provided on the movable rack (4) between a pair of double-ear seats (10); the end of the B reset spring (12) is installed in the spring mounting hole of the rack (2); and a pair of teeth are provided at the bottom of the movable rack (4).

2. A sootblower front end overtravel protection device according to claim 1, characterized in that: A spring mounting hole is provided in the rack avoidance groove (5); one end of a return spring (6) is fixed to the top of the movable rack (4); and the other end of the return spring (6) is mounted in the spring mounting hole of the rack avoidance groove (5).

3. A sootblower front end overtravel protection device according to claim 2, characterized in that: A limit block (8) is provided at the bottom of the sootblower beam (1), one side of the limit block (8) is a rack accommodating area (9), and when the movable rack (4) is horizontal, the other end of the movable rack (4) is located in the rack accommodating area (9).

4. A sootblower front end overtravel protection device according to claim 1, characterized in that: The rotating shaft (7) is a pin.

5. The sootblower front end overtravel protection device according to claim 1, characterized in that: The rack avoidance groove (5) is a rectangular groove.

6. A sootblower front end overtravel protection device according to claim 3, characterized in that: The limiting block (8) is welded to the bottom of the sootblower beam (1).

7. The sootblower front end overtravel protection device according to claim 1, characterized in that: The rack (2) is detachably mounted on the bottom of the sootblower beam (1) via bolts.

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