A hands-free scraper for steam turbine seal blocks

Abstract

This utility model belongs to the technical field of steam turbine maintenance equipment, specifically relating to a hands-free scraping machine for steam turbine seal blocks. It includes a variable-speed motor, a scraping grinding head, a positioning rolling pulley, a horizontal adjustment component, a vertical adjustment component, and a hands-free support component. The scraping grinding head is mounted on one end of the variable-speed motor, which is also mounted on the vertical adjustment component. The vertical adjustment component is vertically positioned on one edge of the horizontal adjustment component. The positioning rolling pulley is vertically positioned at the end of the horizontal adjustment component near the vertical adjustment component. The hands-free support component is positioned at the end of the horizontal adjustment component away from the vertical adjustment component. This hands-free scraping machine, through its automatic clamping and stable support structure, completely eliminates manual support, effectively avoiding muscle strain and joint damage caused by prolonged bending and arm suspension in traditional scraping operations.

Description

Technical Field

[0001] This utility model belongs to the technical field of steam turbine maintenance equipment, specifically relating to a hands-free scraper for steam turbine steam seal blocks. Background Technology

[0002] In existing technologies, precision scraping of turbine seal blocks typically requires operators to manually support the scraping equipment throughout the entire process. Due to the complex curved structure of turbine seal blocks, maintaining a precise contact angle and constant pressure between the equipment and the seal block surface during scraping necessitates prolonged periods of forced posture, such as bending over and suspending the arms. In actual production, a single scraping operation often lasts 2-4 hours, requiring operators to maintain constant concentration to control the equipment's posture, which greatly increases the risk of occupational musculoskeletal disorders. Statistics show that workers scraping turbine seal blocks often suffer from occupational diseases such as lumbar disc herniation, frozen shoulder, or carpal tunnel syndrome. Furthermore, the lack of stability from manual support easily leads to fluctuations in scraping pressure, affecting the surface finishing quality. Although existing equipment has speed control capabilities, it lacks an effective automatic positioning and support system, and operators still have to endure additional loads from equipment vibration. These problems severely restrict the efficiency and safety of turbine maintenance operations. Utility Model Content

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one aspect of the present invention is to provide a hands-free scraping machine for steam turbine seal blocks, comprising a variable speed motor, a scraping grinding head, a positioning rolling pulley, a horizontal adjustment component, a vertical adjustment component, and a hands-free support component. The scraping grinding head is provided at one end of the variable speed motor, the variable speed motor is mounted on the vertical adjustment component, the vertical adjustment component is vertically mounted on one edge of the horizontal adjustment component, the positioning rolling pulley is vertically mounted at the end of the horizontal adjustment component close to the vertical adjustment component, and the hands-free support component is mounted at the end of the horizontal adjustment component away from the vertical adjustment component.

[0004] Preferably, the hands-free support assembly includes a central rotating shaft, a fan-shaped rotating plate, and a telescopic tightening device. The central rotating shaft is rotatably disposed at the end of the horizontal adjustment assembly away from the vertical adjustment assembly. The fan-shaped rotating plate is disposed on the central rotating shaft and can rotate horizontally through the central rotating shaft. Multiple sets of telescopic tightening devices are provided on the upper surface of the fan-shaped rotating plate.

[0005] Preferably, the bottom of the fan-shaped rotating plate is provided with a gripping assembly.

[0006] Preferably, the gripper assembly includes two symmetrically arranged fixed grippers, one end of which is coaxially hinged to the central rotating shaft, and the two fixed grippers are connected by a gripper spring.

[0007] Preferably, the telescopic clamping device is arranged in a divergent pattern on the fan-shaped rotating plate with the central rotating shaft as the center.

[0008] Preferably, the telescopic tightening device includes a pressure roller, a movable push rod, a telescopic adjusting sleeve, a fixed sleeve, and a spring I. The fixed sleeve is fixedly mounted on the fan-shaped rotating plate. The telescopic adjusting sleeve is movably mounted at one end of the fixed sleeve. The movable push rod is movably mounted at the end of the telescopic adjusting sleeve away from the fixed sleeve. The end of the movable push rod that extends into the telescopic adjusting sleeve is connected to the inner bottom of the telescopic adjusting sleeve through the spring I. The pressure roller is located at the end of the movable push rod away from the spring I.

[0009] Preferably, a threaded hole is provided on the outer wall of the fixed sleeve, and a positioning bolt is provided on the fixed sleeve through the threaded hole. The positioning bolt is used to position the control telescopic adjustment sleeve.

[0010] Preferably, the fixed gripper includes a clamping rod, a spring II, and an extension rod. One end of the clamping rod is coaxially hinged to the central rotating shaft, and the other end is movably inserted into the extension rod. Both ends of the spring II are fixedly connected to the end of the clamping rod and the inner bottom of the extension rod, respectively.

[0011] Preferably, the fan-shaped rotating plate is provided with a rotating handle, which is vertically disposed on the fan-shaped rotating plate.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] This novel hands-free scraping machine completely eliminates manual support through its automatic clamping and stable support structure, effectively avoiding muscle strain and joint damage caused by prolonged bending and arm suspension in traditional scraping operations. The telescopic clamping device and the spring-adaptive fixed gripper work together to achieve stable workpiece clamping; the operator only needs to adjust the angle by turning the handle, without continuous force. The horizontal / vertical adjustment components fully mechanize the scraping process, reducing the physical load on operators and significantly lowering the risk of occupational musculoskeletal diseases. It is particularly suitable for batch scraping of steam turbine seal blocks, ensuring processing accuracy while fundamentally eliminating safety hazards caused by fatigue operation.

[0014] Additional aspects and advantages of this invention will become apparent from the description which follows, or may be learned by practice of this invention. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a top view of the hand-free support component of this utility model;

[0018] Figure 3 This is a bottom view of the hand-free support component of this utility model;

[0019] Figure 4 This is a side view of the hand-free support component of this utility model;

[0020] Figure 5 This is a schematic diagram of the fixing clamp of this utility model;

[0021] Figure 6 This is a schematic diagram of the telescopic tightening device of this utility model;

[0022] The correspondence between the markings and component names in the attached diagram is as follows:

[0023] 1 is a variable speed motor, 2 is a scraping grinding head, 3 is a positioning rolling pulley, 4 is a horizontal adjustment component, 5 is a vertical adjustment component, 6 is a hands-free support component, 61 is a central rotating shaft, 62 is a fan-shaped rotating plate, 63 is a telescopic clamping device, 64 is a fixed gripper, 65 is a gripper spring, 631 is a pressure roller, 632 is a movable top rod, 633 is a telescopic adjusting sleeve, 634 is a fixed sleeve, 636 is spring I, 641 is a clamping rod, 642 is a spring II, 643 is an extension rod, and 66 is a rotating handle. Detailed Implementation

[0024] 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.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] This utility model relates to a hands-free scraping machine for steam turbines, comprising a variable speed motor 1, a scraping grinding head 2, a positioning rolling pulley 3, a horizontal adjustment assembly 4, a vertical adjustment assembly 5, a hands-free support assembly 6, a central rotating shaft 61, a fan-shaped rotating plate 62, a telescopic tightening device 63, a fixed gripper 64, a gripper spring 65, a pressure roller 631, a movable top rod 632, a telescopic adjusting sleeve 633, a fixed sleeve 634, a positioning bolt 635, a spring I 636, a clamping rod 641, a spring II 642 and an extension rod 643, and a rotating handle 66.

[0027] A scraping head 2 is provided at one end of a variable speed motor 1. The variable speed motor 1 is mounted on a vertical adjustment assembly 5, which is vertically mounted on one edge of a horizontal adjustment assembly 4. A positioning rolling pulley 3 is vertically mounted on the end of the horizontal adjustment assembly 4 near the vertical adjustment assembly 5. A hands-free support assembly 6 is mounted on the end of the horizontal adjustment assembly 4 away from the vertical adjustment assembly 5. The central shaft 61 of the hands-free support assembly 6 is rotatably mounted on the end of the horizontal adjustment assembly 4 away from the vertical adjustment assembly 5. A fan-shaped rotating plate 62 is mounted on the central shaft 61 and can rotate horizontally through the central shaft 61. Two symmetrically arranged fixed grippers 64 are provided at the bottom of the fan-shaped rotating plate 62. One end of each fixed gripper 64 is coaxially hinged to the central shaft 61. The two fixed grippers 64 are connected by a gripper spring 65. A telescopic tightening device 63 is arranged radially on the fan-shaped rotating plate 62 with the central shaft 61 as the center. The fixed sleeve 63 of the telescopic tightening device 63 4. Fixedly mounted on the fan-shaped rotating plate 62, the telescopic adjusting sleeve 633 is movably mounted at one end of the fixed sleeve 634, the movable push rod 632 is movably mounted at the end of the telescopic adjusting sleeve 633 away from the fixed sleeve 634, the end of the movable push rod 632 extending into the telescopic adjusting sleeve 633 is connected to the inner bottom of the telescopic adjusting sleeve 633 through the spring I 636, the pressure roller 631 is located at the end of the movable push rod 632 away from the spring I 636, the outer wall of the fixed sleeve 634 is provided with a threaded hole, the fixed sleeve 634 is provided with a positioning bolt 635 through the threaded hole, the positioning bolt 635 is used to position the telescopic adjusting sleeve 633, one end of the clamping rod 641 of the fixed gripper 64 is coaxially hinged to the central rotating shaft 61, and the other end is movably inserted into the extension rod 643, the two ends of the spring II 642 are fixedly connected to the end of the clamping rod 641 and the inner bottom of the extension rod 643 respectively, and the rotating handle 66 is vertically mounted on the fan-shaped rotating plate 62.

[0028] In use, first place the turbine seal block to be ground along the fan-shaped rotating plate 62. Then, by stretching the gripping spring 65 and spring II 642, the fixed gripping clamp 64 and clamping rod 641 clamp and fix the turbine seal block to be ground. Adjust the length of the movable top rod 632 to make the telescopic tightening device 63 tighten the turbine seal block to be ground. Tighten the positioning bolt 635 on the telescopic adjusting sleeve 633 to fix the length of the telescopic tightening device 63. Slide the positioning rolling pulley 3 to make it close to the turbine seal block to be ground. Adjust the height of the vertical adjustment component 5 so that the scraping grinding head 2 corresponds to the grinding line of the turbine seal block to be ground. Turn on the variable speed motor 1 to grind the turbine seal block to be ground. During grinding, rotate the rotating handle 66 to move the turbine seal block back and forth to grind the corresponding position.

[0029] The above description only describes the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.

Claims

1. A hands-free skimming machine for a steam turbine gland seal block, characterized by: The system includes a variable speed motor (1), a scraping grinding head (2), a positioning rolling pulley (3), a horizontal adjustment component (4), a vertical adjustment component (5), and a hands-free support component (6). The variable speed motor (1) is provided with a scraping grinding head (2) at one end. The variable speed motor (1) is provided on the vertical adjustment component (5). The vertical adjustment component (5) is vertically provided on one side edge of the horizontal adjustment component (4). The positioning rolling pulley (3) is vertically provided at the end of the horizontal adjustment component (4) close to the vertical adjustment component (5). The hands-free support component (6) is provided at the end of the horizontal adjustment component (4) away from the vertical adjustment component (5).

2. The hands-free scraper for turbine steam seal blocks according to claim 1, characterized in that: The hands-free support assembly (6) includes a central rotating shaft (61), a fan-shaped rotating plate (62), and a telescopic tightening device (63). The central rotating shaft (61) is rotatably disposed at one end of the horizontal adjustment assembly (4) away from the vertical adjustment assembly (5). The fan-shaped rotating plate (62) is disposed on the central rotating shaft (61). The fan-shaped rotating plate (62) can rotate in the horizontal direction through the central rotating shaft (61). The telescopic tightening device (63) is provided in multiple sets on the upper surface of the fan-shaped rotating plate (62).

3. A hands-free scarfing machine for a steam turbine gland seal block according to claim 2, wherein: The bottom of the fan-shaped rotating plate (62) is provided with a gripping assembly.

4. A hands-free scarfing machine for a steam turbine gland plate as defined in claim 3, wherein: The gripper assembly includes two symmetrically arranged fixed grippers (64), one end of which is coaxially hinged to the central rotating shaft (61), and the two fixed grippers (64) are connected by a gripper spring (65).

5. A hands-free scarfing machine for a steam turbine gland seal block according to claim 2, wherein: The telescopic clamping device (63) is arranged in a divergent pattern on the fan-shaped rotating plate (62) with the central rotating shaft (61) as the center.

6. A hands-free scarfing machine for a steam turbine gland seal block according to claim 2, wherein: The telescopic tightening device (63) includes a pressure roller (631), a movable push rod (632), a telescopic adjusting sleeve (633), a fixed sleeve (634), and a spring I (636). The fixed sleeve (634) is fixedly mounted on the fan-shaped rotating plate (62). The telescopic adjusting sleeve (633) is movably mounted at one end of the fixed sleeve (634). The movable push rod (632) is movably mounted at the end of the telescopic adjusting sleeve (633) away from the fixed sleeve (634). The end of the movable push rod (632) that extends into the telescopic adjusting sleeve (633) is connected to the inner bottom of the telescopic adjusting sleeve (633) through the spring I (636). The pressure roller (631) is located at the end of the movable push rod (632) away from the spring I (636).

7. A hands-free scarfing machine for a steam turbine gland seal block according to claim 6, wherein: The outer wall of the fixed sleeve (634) is provided with a threaded hole, and a positioning bolt (635) is provided on the fixed sleeve (634) through the threaded hole. The positioning bolt (635) is used to position the control telescopic adjustment sleeve (633).

8. A hands-free scarfing machine for a steam turbine gland seal block according to claim 4, wherein: The fixed gripper (64) includes a clamping rod (641), a spring II (642) and an extension rod (643). One end of the clamping rod (641) is coaxially hinged to the central rotating shaft (61), and the other end is movably inserted into the extension rod (643). Both ends of the spring II (642) are fixedly connected to the end of the clamping rod (641) and the inner bottom of the extension rod (643), respectively.

9. A hands-free scarfing machine for a steam turbine gland seal block according to claim 2, wherein: The fan-shaped rotating plate (62) is provided with a rotating handle (66) vertically arranged on the fan-shaped rotating plate (62).

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