Transmission connector and electric tool

Abstract

The utility model relates to the technical field of soot blower maintenance, in particular to a transmission connector and an electric tool. The transmission joint is used for connecting the driving device and the soot blower, the driving device comprises a driving shaft, the soot blower comprises a motor shaft and an outer pipe, the motor shaft rotates to drive the outer pipe to move, the transmission joint is connected with the driving device and the soot blower, the transmission joint comprises holes, the holes comprise a first hole and a second hole, and the first hole is communicated with the second hole; the first hole is used for being clamped with the driving shaft, the second hole is used for being clamped with the motor shaft, and the driving device drives the transmission connector to rotate so as to drive the motor shaft to rotate. Therefore, the driving device electrically drives the motor shaft to rotate quickly, the operation is simple and convenient, the labor intensity of operators is reduced, the number of the operators is reduced, the working efficiency is improved, the outer pipe can exit or enter more quickly, the heated surface is prevented from being damaged, the outer pipe is prevented from being deformed and bent due to heating, and the first-aid repair operation time is shortened. And the application degree of the electric drive in the maintenance operation is improved.

Description

Technical Field

[0001] This application relates to the field of sootblower maintenance technology, and in particular to a transmission joint and a power tool. Background Technology

[0002] Sootblowers are used to periodically remove ash buildup on the heating surfaces of high-temperature and low-temperature boilers. During operation, sootblower malfunctions can occur, preventing the outer tube from moving forward or backward normally. Prolonged steam blowing of the sootblower nozzles onto the same area of ​​the heating surface can damage and thin the tube walls, causing leaks, production safety accidents, and economic losses. When a sootblower malfunctions, the outer tube may remain inside the furnace, causing it to bend and deform due to heat.

[0003] Therefore, in view of this situation, there is a need to provide a transmission joint and a power tool to at least partially solve the existing problems. Utility Model Content

[0004] The summary of this application introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This summary is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] According to one aspect of this application, a transmission joint is provided for connecting a drive device and a soot blower. The drive device includes a drive shaft, and the soot blower includes a motor shaft and an outer tube. The motor shaft rotates to drive the outer tube to move. The transmission joint connects the drive device and the soot blower. The transmission joint includes a hole, which includes a first hole and a second hole. The first hole and the second hole are connected. The first hole is used to engage with the drive shaft, and the second hole is used to engage with the motor shaft. The drive device drives the transmission joint to rotate, thereby driving the motor shaft to rotate.

[0006] According to the transmission joint of this application, a drive unit and a sootblower are connected. The drive unit includes a drive shaft, and the sootblower includes a motor shaft and an outer tube. The motor shaft rotates to drive the outer tube to move. The transmission joint connects the drive unit and the sootblower. The transmission joint includes holes, including a first hole and a second hole, which are connected. The first hole is used to engage with the drive shaft, and the second hole is used to engage with the motor shaft. The drive unit drives the transmission joint to rotate, thereby driving the motor shaft to rotate. In this way, the drive unit electrically drives the motor shaft to rotate quickly, which is simple and convenient to operate, reduces the labor intensity of operators, reduces the number of operators, improves work efficiency, allows the outer tube to be withdrawn or inserted more quickly, avoids damage to the heated surface and bending of the outer tube due to heat, shortens the repair time, and improves the application of electric drive in maintenance operations.

[0007] Optionally, the hole further includes a guide groove, which communicates with the second hole and protrudes from the second hole, and the guide groove extends along the axial direction of the second hole.

[0008] Optionally, the second hole includes an inner peripheral surface, and the guide groove includes a first guide segment, a second guide segment, and a third guide segment. The first guide segment and the third guide segment are both connected to the inner peripheral surface, and the second guide segment is located between the first guide segment and the third guide segment.

[0009] Optionally, the guide groove is closer to the outside of the transmission joint along the radial direction of the second hole than the first hole.

[0010] Optionally, the first hole is constructed as a square hole.

[0011] Optionally, the first hole is formed by at least three straight line segments.

[0012] Optionally, the second hole is constructed as a circular hole.

[0013] Optionally, the dimension of the first hole along the radial direction of the second hole is smaller than the dimension of the second hole.

[0014] Optionally, the first hole is pluggably connected to the drive shaft, and the second hole is pluggably connected to the motor shaft.

[0015] According to another aspect of this application, an electric tool is also provided, comprising a drive unit and the aforementioned transmission joint. The drive unit includes a drive shaft connected to the transmission joint, and the drive shaft rotates to drive the transmission joint to rotate. In this way, the electric drive motor shaft of the drive unit rotates rapidly, making operation simple and convenient, reducing the labor intensity of operators, reducing the number of operators, improving work efficiency, allowing the outer tube to be withdrawn or inserted more quickly, avoiding damage to the heated surface and heat-induced deformation and bending of the outer tube, shortening emergency repair time, and increasing the application of electric drive in maintenance operations. Attached Figure Description

[0016] The following figures, which are incorporated herein by reference and are used to understand this application, illustrate embodiments of the invention and their descriptions, explaining the apparatus and principles of the invention.

[0017] In the picture,

[0018] Figure 1 This is a perspective view of a transmission device according to a preferred embodiment of this application;

[0019] Figure 2 for Figure 1 The diagram shows a left-side view of the transmission device.

[0020] Figure 3 For along Figure 2 A schematic diagram of the cross-section intercepted by line AA in the diagram;

[0021] Figure 4 For along Figure 2 A schematic diagram of the cross section intercepted by line BB in the diagram.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100: Transmission joint

[0024] 110: Kong

[0025] 111: First hole

[0026] 112: Second hole

[0027] 113: Guide groove

[0028] 114: First guide section

[0029] 115: Second guide section

[0030] 116: Third guide section

[0031] 117: Straight line segment

[0032] 118: First straight segment

[0033] 119: Second straight segment

[0034] 120: Third straight segment

[0035] 121: Fourth straight segment Detailed Implementation

[0036] The following description provides numerous specific details to offer a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with this application.

[0037] To fully understand this application, detailed portions will be set forth in the following description in order to illustrate it. Obviously, implementation of this application is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this application are described in detail below; however, other embodiments may exist besides these detailed descriptions, and should not be construed as being limited to the embodiments set forth herein.

[0038] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the scope of this application. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. The terms “upper,” “lower,” “front,” “rear,” “left,” “right,” and similar expressions used in this application are for illustrative purposes only and are not intended to be limiting.

[0039] The ordinal numbers such as "first" and "second" used in this application are merely identifiers and have no other meaning, such as a specific order. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] The specific embodiments of this application will be described in more detail below with reference to the accompanying drawings, which illustrate representative embodiments of this application and are not intended to limit this application.

[0041] like Figure 1 As shown, this application provides a transmission joint 100 for connecting a drive unit and a soot blower.

[0042] The drive unit includes a drive shaft that can rotate, thereby converting electrical energy into mechanical energy. The drive shaft rotates about its axial direction. The drive shaft can rotate clockwise or counterclockwise.

[0043] A soot blower is used to remove ash buildup on the surface of a boiler's heating surfaces. Optionally, the soot blower can be a boiler steam soot blower. The soot blower can eject steam at a specific angle, speed, and flow rate, causing the steam to act on the surface of the boiler's heating surfaces, thereby effectively removing deposits such as ash, slag, and coke.

[0044] The soot blower includes a motor shaft and an outer tube, with the motor shaft connected to the outer tube. The motor shaft is rotatable. The motor shaft rotates about its axial direction. The rotation of the motor shaft causes the outer tube to move. The axial direction of the outer tube can be parallel to the axial direction of the motor shaft. The outer tube can move along the axial direction of the motor shaft. Optionally, the motor shaft can be connected to the outer tube via a gear and a rack. The motor shaft is connected to the gear. The rotation of the motor shaft drives the gear to rotate. The gear meshes with the outer teeth of the rack. The gear rotates to drive the rack to move linearly. The rack is connected to the outer tube. The rack drives the outer tube to move linearly. Thus, the rotation of the motor shaft drives the movement of the outer tube. In this embodiment, the way the motor shaft drives the movement of the outer tube is not limited to the above method; it can also be achieved by means such as slider movement, and this embodiment does not limit this.

[0045] The motor shaft can rotate in both forward and reverse directions. For example, forward rotation corresponds to clockwise, and reverse rotation corresponds to counterclockwise. Changing the rotation direction of the motor shaft changes the movement direction of the sootblower's outer tube. When the motor shaft rotates clockwise, the outer tube can advance along its axial direction into the boiler. The outer tube moves towards the boiler's heating surface until it reaches the predetermined purging position, allowing the sootblower to operate for cleaning. As an alternative implementation, when the motor shaft rotates counterclockwise, the outer tube can retract along its axial direction to the outside of the boiler. The outer tube moves away from the heating surface, returning to its initial standby position, thus keeping the outer tube away from the heating surface and preventing damage to the heating surface and heat-induced deformation and bending of the outer tube, allowing the sootblower to operate safely and smoothly.

[0046] In order to make the motor shaft rotate, the transmission joint 100 cooperates with the drive device so that the motor shaft rotates and drives the outer tube to move, thereby quickly removing the outer tube of the sootblower under the drive of the drive device for maintenance or replacement.

[0047] The transmission joint 100 connects the drive unit and the soot blower. Optionally, the transmission joint 100 connects the drive unit and the soot blower via a direct-connect sleeve. The transmission joint 100 is located between the drive unit and the soot blower. The drive unit is located on one side of the transmission joint 100 along its axial direction, and the soot blower is located on the other side of the transmission joint 100 along its axial direction. The drive unit is connected to the soot blower via the transmission joint 100. In this way, the power output from the drive unit can be efficiently transmitted to the transmission joint 100 and then to the motor shaft, reducing energy loss, improving power transmission efficiency, and making the structure of the transmission joint 100 more compact and portable.

[0048] Further, the transmission joint 100 includes a hole 110 located at the center of the transmission joint 100 along its axial direction. Preferably, the axial direction of the drive shaft is parallel to the axial direction of the transmission joint 100. The drive shaft and the transmission joint 100 are coaxially arranged. At least a portion of the drive shaft can be inserted into the hole 110 to connect the drive device to the transmission joint 100. As an alternative embodiment, a portion of the drive shaft can be inserted into the hole 110. As another alternative embodiment, the entire drive shaft can be inserted into the hole 110.

[0049] Preferably, the axial direction of the motor shaft is parallel to the axial direction of the transmission joint 100. The motor shaft and the transmission joint 100 are coaxially arranged. A portion of the motor shaft can be inserted into the hole 110 so that the soot blower can be connected to the transmission joint 100. For example, an end of the motor shaft can be inserted into the hole 110.

[0050] Specifically, such as Figure 3 and Figure 4 As shown, hole 110 includes a first hole 111 and a second hole 112, which are connected. The first hole 111 and the second hole 112 are connected along the axial direction of the transmission joint 100.

[0051] The first hole 111 is closer to the drive shaft than the second hole 112. The first hole 111 is used to engage with the drive shaft. The drive shaft can be inserted into the first hole 111. Optionally, the first hole 111 and the drive shaft can be press-fitted together to ensure a tight engagement, thereby tightly connecting the transmission joint 100 to the drive shaft. In this way, rotation of the drive shaft can drive the transmission joint 100 to rotate. Furthermore, during rotation, the transmission joint 100 is fixed and engaged with the drive shaft.

[0052] The second hole 112 is closer to the motor shaft than the first hole 111. The second hole 112 is used to engage with the motor shaft. The motor shaft can be inserted into the second hole 112. Optionally, the second hole 112 and the motor shaft can be press-fitted together to ensure a tight fit, thereby tightly connecting the transmission joint 100 to the motor shaft. In this way, rotation of the transmission joint 100 can drive the motor shaft to rotate. Furthermore, during rotation, the transmission joint 100 is fixed and engaged with the motor shaft.

[0053] The drive shaft rotates to drive the transmission joint 100 to rotate about its axial direction. The transmission joint 100 rotates to drive the motor shaft to rotate about its axial direction. Thus, the drive device drives the transmission joint 100 to rotate, thereby driving the motor shaft to rotate.

[0054] The drive unit allows the motor shaft to rotate in two directions. The drive shaft can rotate clockwise or counterclockwise. For example, when the drive shaft rotates clockwise, it drives both the transmission joint 100 and the motor shaft to rotate clockwise, allowing the outer tube to advance axially into the boiler. The outer tube moves towards the boiler's heating surface. When the drive shaft rotates counterclockwise, it drives both the transmission joint 100 and the motor shaft to rotate counterclockwise, allowing the outer tube to retract axially to the outside of the boiler. The outer tube moves away from the heating surface. Thus, the drive shaft, through the transmission joint 100, can cause the motor shaft to rotate clockwise or counterclockwise, thereby causing the outer tube to advance or retract axially.

[0055] The drive shaft can transmit power to the transmission joint 100. The drive shaft can transmit speed and torque to the transmission joint 100. The transmission joint 100 can transmit power to the motor shaft. The transmission joint 100 can transmit speed and torque to the motor shaft. The drive unit transmits power to the motor shaft through the transmission joint 100. The drive unit transmits speed and torque to the motor shaft through the transmission joint 100.

[0056] The drive unit, via transmission joint 100, drives the motor shaft at a speed greater than that of a manually operated crank. This transforms the traditional manual drive of the motor shaft into a drive unit-driven one, replacing manual with electric drive. This simplifies operation, reduces the workload of workers, and requires only one person to perform the operation, thus reducing the number of personnel needed and improving work efficiency. The faster motor shaft rotation allows for quicker movement of the outer tube, facilitating rapid entry and exit, preventing damage to the heated surface and heat-induced deformation and bending of the outer tube. This shortens repair time and increases the application of electric drive in maintenance work.

[0057] As an optional implementation, the transmission joint 100 and the drive device can also operate under normal sootblower conditions. The drive device, through the transmission joint 100, enables the motor shaft to rotate in the same direction as the sootblower-driven motor shaft. The speed at which the drive device drives the motor shaft to rotate corresponds to the speed at which the sootblower-driven motor shaft rotates. Optionally, the speed at which the drive device drives the motor shaft to rotate is the same as the speed at which the sootblower-driven motor shaft rotates. The motor shaft can be driven jointly by the drive device and the sootblower to enhance power output, enabling faster movement of the outer tube.

[0058] According to the transmission joint 100 of this application, a drive unit and a soot blower are connected. The drive unit includes a drive shaft, and the soot blower includes a motor shaft and an outer tube. The motor shaft rotates to drive the outer tube to move. The transmission joint 100 connects the drive unit and the soot blower. The transmission joint 100 includes a hole 110, which includes a first hole 111 and a second hole 112. The first hole 111 and the second hole 112 are connected. The first hole 111 is used to engage with the drive shaft, and the second hole 112 is used to engage with the motor shaft. The drive unit drives the transmission joint 100 to rotate, thereby driving the motor shaft to rotate. In this way, the drive unit electrically drives the motor shaft to rotate quickly, which is simple and convenient to operate, reduces the labor intensity of operators, reduces the number of operators, improves work efficiency, allows the outer tube to be withdrawn or inserted more quickly, avoids damage to the heated surface and bending of the outer tube due to heat, shortens the emergency repair time, and improves the application of electric drive in maintenance operations.

[0059] like Figure 1 and Figure 2 As shown, the hole 110 also includes a guide groove 113, which communicates with and protrudes from the second hole 112. The guide groove 113 protrudes outward along the radial direction of the second hole 112. The guide groove 113 protrudes outward in a direction away from the second hole 112. The guide groove 113 is closer to the outside of the transmission joint 100 than the second hole 112 in the radial direction of the transmission joint 100.

[0060] The second hole 112 guides the motor shaft through the guide groove 113. The motor shaft has a protrusion that extends radially outward from its outer surface. The protrusion can be inserted into the guide groove 113, allowing the motor shaft to be inserted into the second hole 112. Thus, the guide groove 113 guides the motor shaft.

[0061] The guide groove 113 extends along the axial direction of the second hole 112. The axial direction of the second hole 112 is parallel to the axial direction of the transmission joint 100. Optionally, the dimension of the guide groove 113 along the axial direction of the transmission joint 100 can be the same as the dimension of the second hole 112 along the axial direction of the transmission joint 100. The protrusion is movable relative to the guide groove 113. The protrusion can be inserted into the guide groove 113 along the axial direction of the transmission joint 100.

[0062] The guide groove 113 can engage with the protrusion. The guide groove 113 and the protrusion can fit tightly together. Rotation of the transmission joint 100 can cause the guide groove 113 to rotate. Rotation of the guide groove 113 can drive the protrusion to rotate. Rotation of the transmission joint 100 can cause the second hole 112 and the guide groove 113 to rotate synchronously, so that the motor shaft and the protrusion rotate synchronously. The guide groove 113 can restrict the displacement of the protrusion in the circumferential direction of the transmission joint 100. In this way, during rotation, the guide groove 113 is connected to the protrusion, so that the transmission joint 100 is connected to the motor shaft. Optionally, the guide groove 113 and the protrusion can be tightly engaged by an interference fit.

[0063] This application does not limit the specific shape of the guide groove 113. The specific shape of the guide groove 113 can be processed according to the specific shape of the protrusion, so that the guide groove 113 can be tightly engaged with the protrusion.

[0064] The second hole 112 includes an inner circumferential surface, which is located inside the transmission joint 100 along the radial direction of the transmission joint 100. The inner circumferential surface of the second hole 112 is connected to the guide groove 113.

[0065] In the embodiments of this disclosure, the guide groove 113 includes a first guide section 114, a second guide section 115, and a third guide section 116, all of which are located inside the transmission joint 100 along the radial direction of the transmission joint 100. The first guide section 114 and the third guide section 116 are spaced apart. The second guide section 115 is located between the first guide section 114 and the third guide section 116. The first guide section 114 is perpendicularly connected to the second guide section 115. The second guide section 115 is perpendicularly connected to the third guide section 116. Both the first guide section 114 and the third guide section 116 are connected to the inner circumferential surface of the second hole 112.

[0066] One end of the first guide segment 114 is connected to one end of the inner circumferential surface, and the other end of the first guide segment 114 is connected to one end of the second guide segment 115. The other end of the second guide segment 115 is connected to one end of the third guide segment 116, and the other end of the third guide segment 116 is connected to the other end of the inner circumferential surface.

[0067] Optionally, the first guide segment 114 may be parallel to the third guide segment 116. The second guide segment 115 is perpendicular to the first guide segment 114. The second guide segment 115 is perpendicular to the third guide segment 116. This application does not limit the included angle formed by the connection of the first guide segment 114 and the second guide segment 115, and it can be any one of an acute angle, a right angle, or an obtuse angle. This application does not limit the included angle formed by the connection of the second guide segment 115 and the third guide segment 116, and it can be any one of an acute angle, a right angle, or an obtuse angle.

[0068] The first guide segment 114, the second guide segment 115, and the third guide segment 116 can each abut against at least a portion of the protrusion. The first guide segment 114 abuts against at least a portion of the protrusion. The second guide segment 115 abuts against at least a portion of the protrusion. The third guide segment 116 abuts against at least a portion of the protrusion. Thus, the guide groove 113 engages with the protrusion via the first guide segment 114, the second guide segment 115, and the third guide segment 116. This application does not specifically limit the dimensions of the first guide segment 114, the second guide segment 115, and the third guide segment 116, as long as they allow the guide groove 113 to engage with the protrusion.

[0069] In the embodiments of this disclosure, the guide groove 113 is closer to the outside of the transmission joint 100 relative to the second hole 112. The guide groove 113 is closer to the outside of the transmission joint 100 relative to the first hole 111. The guide groove 113 is closer to the outside of the transmission joint 100 in the radial direction of the second hole 112 than the first hole 111. The dimension of the drive shaft in the radial direction of the transmission joint 100 is smaller than the dimension of the motor shaft in the radial direction of the transmission joint 100. The dimension of the first hole 111 in the radial direction of the second hole 112 is smaller than the dimension of the second hole 112. Therefore, the dimensions of the drive shaft can be better matched. This allows the drive shaft to be relatively small, making the drive device easy to carry.

[0070] In another alternative implementation, the first hole is closer to the outside of the transmission joint relative to the guide groove. The dimension of the drive shaft along the radial direction of the transmission joint is larger than the dimension of the motor shaft along the radial direction of the transmission joint. The dimension of the first hole along the radial direction of the second hole is larger than the dimension of the second hole. This application does not specifically limit the dimensions of the motor shaft and drive shaft along the radial direction of the transmission joint, but when the size of the drive shaft is smaller, the space occupied can be reduced, making the drive device more portable.

[0071] The hole 110 may also include multiple guide grooves 113. This application does not limit the number of guide grooves 113; the number of guide grooves 113 corresponds to the number of protrusions. When the motor shaft has multiple protrusions, the multiple guide grooves 113 correspond one-to-one with the multiple protrusions. The multiple protrusions can be inserted into the multiple guide grooves 113 respectively, so that the multiple protrusions engage with the multiple guide grooves 113 one-to-one.

[0072] As an alternative implementation, when the drive shaft has a protrusion, the first hole 111 may also be provided with a guide groove. The first hole 111 can guide the drive shaft through the guide groove 113, so that when the transmission joint 100 rotates, the first hole 111 and the drive shaft do not rotate relative to each other.

[0073] The first hole 111 engages with the drive shaft. The cross-sectional shape of the first hole 111 corresponds to the cross-sectional shape of the drive shaft. For example... Figure 2 As shown, the first hole 111 is a square hole. The cross-sectional shape of the drive shaft is square. The first hole 111 has the same cross-sectional shape as the drive shaft. The drive shaft can be inserted into the first hole 111 and engage with it. The shape of the first hole 111 can also be circular, triangular, polygonal, etc., and the shape and size of the drive shaft vary depending on the drive device. This application does not limit the cross-sectional shape of the first hole 111. The cross-sectional shape of the first hole 111 can be machined according to the cross-sectional shape of the drive shaft so that the first hole 111 has the same cross-sectional shape as the drive shaft.

[0074] The size of the first hole 111 corresponds to the size of the drive shaft. Optionally, the size of the first hole 111 is the same as the size of the drive shaft. For example, when the cross-sectional shape of the first hole 111 is composed of multiple straight segments of the same size, the drive shaft is also composed of multiple straight segments of the same size. The size of the straight segments of the first hole 111 is the same as the size of the straight segments of the drive shaft. Alternatively, when the first hole 111 is composed of multiple straight segments of different sizes, and these segments are connected in a specific order to form the first hole 111, the drive shaft is also composed of multiple drive segments of different sizes, connected in a specific order to form the drive shaft. The multiple drive segments of different sizes correspond one-to-one with the other drive segments of different sizes in the same order. The corresponding drive segments and straight segments fit together and have the same size. This application does not limit the size of the first hole 111; the size of the first hole 111 can be machined according to the size of the drive shaft so that the drive shaft can be inserted into and engage with the first hole 111.

[0075] In embodiments of this disclosure, the first hole 111 is formed by at least three straight segments 117. Two adjacent straight segments 117 of the at least three straight segments 117 of the first hole 111 are connected. A drive shaft corresponds to the first hole 111. The drive shaft includes at least three drive sections. Two adjacent drive sections of the at least three drive sections of the drive shaft are connected. The at least three straight segments 117 of the first hole 111 are respectively attached to and correspond one-to-one with the at least three drive sections of the drive shaft. The at least three drive sections of the drive shaft, according to their arrangement order, correspond to the dimensions of the at least three straight segments 117 of the first hole 111.

[0076] For example, both the first hole 111 and the drive shaft have triangular cross-sectional shapes. The first hole 111 includes a first straight segment, a second straight segment, and a third straight segment. One end of the first straight segment is connected to the second straight segment, and the other end is connected to the third straight segment. The second straight segment is connected to the third straight segment. The drive shaft includes a first drive segment, a second drive segment, and a third drive segment. One end of the first drive segment is connected to the second drive segment, and the other end is connected to the third drive segment. The second drive segment is connected to the third drive segment. The first straight segment corresponds to the first drive segment and fits into it. The second straight segment corresponds to the second drive segment and fits into it. The third straight segment corresponds to the third drive segment and fits into it. In this way, the first straight segment, the second straight segment, and the third straight segment fit into and correspond one-to-one with the first drive segment, the second drive segment, and the third drive segment, respectively, and the first hole 111 engages with the drive shaft. This application does not specifically limit the dimensions of the first straight segment, the second straight segment, and the third straight segment, as long as they are sufficient to allow the drive shaft to engage with the first hole 111.

[0077] For example, such as Figure 2As shown, both the first hole 111 and the drive shaft have quadrilateral cross-sectional shapes. The first hole 111 includes a first straight segment 118, a second straight segment 119, a third straight segment 120, and a fourth straight segment 121. The first straight segment 118 and the third straight segment 120 are spaced apart. The second straight segment 119 and the fourth straight segment 121 are also spaced apart. The first straight segment 118 is located between the second straight segment 119 and the fourth straight segment 121. One end of the first straight segment 118 is connected to the second straight segment 119, and the other end is connected to the fourth straight segment 121. The other end of the second straight segment 119 is connected to the third straight segment 120. The third straight segment 120 is located between the second straight segment 119 and the fourth straight segment 121. The third straight segment 120 is also connected to the fourth straight segment 121. In this way, the adjacent line segments 117 of the first line segment 118, the second line segment 119, the third line segment 120 and the fourth line segment 121 are connected together, so that the four line segments 117 together form a closed quadrilateral structure, thereby making the cross-sectional shape of the first hole 111 quadrilateral.

[0078] The drive shaft includes a first drive segment, a second drive segment, a third drive segment, and a fourth drive segment. The first and third drive segments are spaced apart. The second and fourth drive segments are also spaced apart. The first drive segment is located between the second and fourth drive segments. One end of the first drive segment is connected to the second drive segment, and the other end is connected to the fourth drive segment. The other end of the second drive segment is connected to the third drive segment. The third drive segment is located between the second and fourth drive segments. The third drive segment is also connected to the fourth drive segment. Thus, adjacent drive segments in the first, second, third, and fourth drive segments are connected together, forming a closed quadrilateral structure, resulting in a quadrilateral cross-sectional shape for the drive shaft.

[0079] The first straight segment 118 corresponds to the first drive segment and is fully engaged. The second straight segment 119 corresponds to the second drive segment and is fully engaged. The third straight segment 120 corresponds to the third drive segment and is fully engaged. The fourth straight segment 121 corresponds to the fourth drive segment and is fully engaged. Thus, the first straight segment 118, the second straight segment 119, the third straight segment 120, and the fourth straight segment 121 are respectively engaged and correspond one-to-one with the first drive segment, the second drive segment, the third drive segment, and the fourth drive segment, and the first hole 111 is engaged with the drive shaft.

[0080] In the embodiments of this disclosure, the cross-section of the drive shaft is generally square. The cross-sectional dimension of the drive shaft is 12.7 mm. The drive shaft engages with the first hole 111. Therefore, the first hole 111 is a square hole, and the dimensions of the first straight segment 118, the second straight segment 119, the third straight segment 120, and the fourth straight segment 121 are the same and their cross-sectional dimensions correspond. Optionally, the first hole 111 is a square hole, and the dimensions of the first straight segment 118, the second straight segment 119, the third straight segment 120, and the fourth straight segment 121 are all 12.7 mm. This makes the dimensions of the drive shaft and the transmission joint 100 more closely matched.

[0081] The second hole 112 engages with the motor shaft. The cross-sectional shape of the second hole 112 corresponds to the cross-sectional shape of the motor shaft. For example... Figure 1 and Figure 2 As shown, the second hole 112 is a circular hole. The cross-sectional shape of the motor shaft is also a circular hole. The cross-sectional shape of the second hole 112 is the same as that of the motor shaft. The motor shaft can be inserted into the second hole 112 and engage with it. The shape and size of the motor shaft vary depending on the type of sootblower. This application does not limit the cross-sectional shape of the second hole 112; the cross-sectional shape of the second hole 112 can be machined according to the cross-sectional shape of the drive shaft so that the second hole 112 is the same as the cross-sectional shape of the drive shaft.

[0082] The dimensions of the second hole 112 correspond to the dimensions of the motor shaft. In the embodiments of this disclosure, the dimensions of the second hole 112 along the radial direction of the transmission joint 100 correspond to the dimensions of the motor shaft along the radial direction. Optionally, the dimensions of the second hole 112 along the radial direction of the transmission joint 100 match the dimensions of the motor shaft along the radial direction. This application does not limit the dimensions of the second hole 112 along the radial direction of the transmission joint 100, as long as it allows the motor shaft to engage with the second hole 112.

[0083] In the embodiments of this disclosure, the second hole 112 has a radial dimension of 17.3 mm along the transmission joint 100, and the second hole 112 and guide groove 113 have a radial dimension of 19.5 mm along the transmission joint 100. The first guide groove and the third guide groove have the same dimension. The first guide groove and the third guide groove each have a dimension of 2.2 mm. The second guide groove has a dimension of 4.5 mm. The motor shaft engages with the second hole 112. The radial dimension of the motor shaft along the transmission joint 100 corresponds to the radial dimension of the second hole 112 along the transmission joint 100. Optionally, the radial dimension of the motor shaft along the transmission joint 100 is 17.3 mm. One part of the protrusion has a dimension of 2.2 mm, and the other part has a dimension of 4.5 mm. In this way, the motor shaft can be inserted into and engage with the second hole 112, and the protrusion can be inserted into and engage with the guide groove 113, thereby making the dimensions of the motor shaft more closely match those of the transmission joint 100.

[0084] The transmission connector 100 has an axial dimension of 80 mm, and the second hole has an axial dimension of 60 mm. The radial dimension of the transmission connector 100 is 36 mm. This makes the transmission connector 100 relatively small and easy to carry.

[0085] The drive joint 100 can be customized in design and manufacturing. Optionally, the drive joint 100 can be made of #35 steel to provide sufficient strength and machinability. This allows the drive joint 100 to be used with different types of drive devices to move the outer tubes of various types of sootblowers, expanding its application range and improving flexibility and utilization.

[0086] To facilitate replacement of the transmission joint 100, the drive unit is pluggably connected to the transmission joint 100. The drive unit is movable relative to the transmission joint 100. The drive unit is movable along the axial direction of the transmission joint 100. The drive unit and the transmission joint 100 are pluggably connected along the axial direction of the transmission joint 100. The drive unit can be plugged into and removed from the transmission joint 100 independently. Specifically, the first hole 111 is pluggably connected to the drive shaft. The drive shaft is movable relative to the first hole 111. The drive shaft is movable along the axial direction of the transmission joint 100. The drive shaft and the first hole 111 are pluggably connected along the axial direction of the transmission joint 100.

[0087] The drive joint 100 is pluggably connected to the sootblower. The drive joint 100 is movable relative to the sootblower. The drive joint 100 is movable along its axial direction. The sootblower and the drive joint 100 are pluggably connected along the axial direction of the drive joint 100. As an alternative embodiment, the drive joint 100 can be plugged into and unplugged from the sootblower independently. As another alternative embodiment, the drive unit can be plugged into and unplugged from the sootblower along with the drive joint 100. Specifically, the second hole 112 is pluggably connected to the motor shaft. The second hole 112 is movable relative to the motor shaft. The second hole 112 is movable along the axial direction of the drive joint 100. The second hole 112 is pluggably connected to the motor shaft along the axial direction of the drive joint 100.

[0088] Any one of the drive unit, transmission joint 100, and sootblower can be separated from the other two. This allows the drive unit and transmission joint 100 to be disassembled and stored separately, reducing their space occupation and making them easier to carry. If either the drive unit or transmission joint 100 malfunctions, it can be replaced promptly, improving flexibility. The drive unit and transmission joint 100 can also be used together to move the outer tubes of different sootblowers for inspection and maintenance, improving maintenance efficiency and flexibility.

[0089] The transmission joint 100 of this application engages with the drive shaft of the drive device through the first hole 111, enabling the drive device to drive the transmission joint 100 to rotate. The transmission joint 100 engages with the motor shaft of the sootblower through the second hole 112, allowing the rotation of the transmission joint 100 to drive the motor shaft to rotate. The drive device drives the transmission joint 100 to rotate, thereby driving the motor shaft to rotate. In this way, the drive device electrically drives the motor shaft to rotate rapidly, making operation simple and convenient, reducing the labor intensity of operators, reducing the number of operators, improving work efficiency, allowing the outer tube to be withdrawn or inserted more quickly, avoiding damage to the heated surface and heat-induced deformation and bending of the outer tube, shortening emergency repair time, and increasing the application of electric drive in maintenance operations.

[0090] This application also provides an electric tool, which includes a drive unit and the aforementioned transmission joint 100.

[0091] According to the power tool of this application, the power tool includes a drive unit and the aforementioned transmission joint 100. The drive unit includes a drive shaft connected to the transmission joint 100, and the rotation of the drive shaft drives the transmission joint 100 to rotate. In this way, the electric drive motor shaft of the drive unit rotates rapidly, making operation simple and convenient, reducing the labor intensity of operators, reducing the number of operators, improving work efficiency, allowing the outer tube to be withdrawn or inserted more quickly, avoiding damage to the heated surface and heat-induced deformation and bending of the outer tube, shortening emergency repair time, and increasing the application of electric drive in maintenance operations.

[0092] The drive unit is technologically mature, boasts reliable performance and safety, is of excellent quality, and is inexpensive, making it easy to procure. Furthermore, the drive unit is small and lightweight, making it easy to carry. Optionally, the drive tool can be an electric wrench. The drive unit can be separated from the transmission unit, and both can be stored independently. The transmission connector 100 is relatively small, further facilitating the portability of the power tool.

[0093] Power tools convert electrical energy into mechanical energy through a power unit. Optionally, the power unit includes a battery. The battery is located inside the power tool. The battery can be constructed as a DC rechargeable lithium battery. This allows for a large battery capacity and long operating time, ensuring continuous work. Furthermore, the battery can provide power without being connected to a power cord during use, making it convenient and saving time and costs associated with connecting a power cord and repairing it if the cord is damaged.

[0094] The power unit can be equipped with multiple batteries to enhance power output. For example, the power unit can have two batteries: one in normal use and the other readily rechargeable as a backup power source. This facilitates battery replacement and improves operational flexibility.

[0095] The power tool outputs power to the drive unit, causing the drive shaft to rotate. Optionally, the power tool can be a Makita TW140D cordless power tool. Its specific performance is shown in the table below:

[0096] name Technical parameters model TW140D Cordless Power Tool power supply 2.0Ah rechargeable lithium battery Voltage 12V Maximum power 110W Torque 110Nm rotational speed 1500r / min Drive shaft size 12.7×12.7mm External dimensions Length 168mm, Height 210mm Total Bare machine 1.1Kg Manufacturer Makita Electric Tools Co., Ltd.

[0097] The power tool is model TW140D cordless power tool. It uses a 2.0Ah rechargeable lithium battery, meaning it is a rechargeable lithium battery with a discharge capacity of 2.0Ah under constant current, i.e., it can continuously discharge for 2 hours at a current of 1 ampere.

[0098] The voltage is a standard 12V. The maximum power P is 110W. The torque T is 110Nm, and the torque T output by the drive shaft is 110Nm. The speed n is 1500 r / min, and the drive shaft can rotate 1500 times per minute. T = 9550P / n. Therefore, when the power tool is connected to the soot blower, the torque of 110Nm can be transmitted to the motor shaft through the drive shaft and transmission joint 100.

[0099] The drive shaft has dimensions of 12.7×12.7mm, meaning the straight segment of the first hole 111 has a dimension of 12.7mm.

[0100] The dimensions are those of a power tool. The power tool is 168mm long and 210mm high. The power tool weighs 1.1kg in its bare state. Thus, the power tool is small, lightweight, and easy to carry.

[0101] The ease of purchasing power tools and the convenient fabrication of transmission joints, coupled with the low overall investment cost of power tools, facilitates the implementation of a method where the power tool drives the motor shaft to move the outer tube. For example, the cost of a Makita TW140D cordless power tool is 1300 yuan, the cost of machining two transmission joints is 300 yuan, and the total cost of the power tool is 1600 yuan. However, if the sootblower malfunctions and repairs are not timely, the cost of replacing the bent and deformed outer tube can reach 20,000 yuan. Therefore, by using a power tool to drive the motor shaft to move the outer tube, the outer tube can be quickly removed from the boiler. This simple operation avoids damage to the outer tube, reduces maintenance costs, and makes the solution easy to implement.

[0102] For example, the power of the sootblower is 1.1KW, and a reduction gear is installed between the sootblower and the motor shaft to make the motor shaft rotate at a specific speed. The speed output of the reduction gear to the motor shaft is 1400r / min. According to the torque calculation formula, T=9550P / n, the torque output by the sootblower to the motor shaft through the reduction gear is 7.5575Nm. The torque transmitted to the motor shaft by the power tool is 110Nm. Thus, the torque transmitted to the motor shaft by the power tool is greater than the torque transmitted to the motor shaft by the sootblower. The power tool can drive the motor shaft to rotate rapidly, thereby causing the outer tube to move rapidly. This application does not specifically limit the torque output by the power tool, as long as it is greater than the torque output by the sootblower to the motor shaft.

[0103] Experiments show that by converting the traditional manual drive of the motor shaft to a power tool drive, the power tool can move the outer tube at a speed of 2 m / min, meaning the outer tube can move 2 m per minute. The maximum moving distance of the outer tube is 9.6 m. It only takes 5 minutes for the outer tube to be withdrawn from the furthest position inside the boiler to the outside. Only one person is needed to achieve the rapid forward and backward movement of the outer tube, which shortens the emergency repair time, improves work efficiency, reduces the labor intensity of operators, and increases the application of power tools in maintenance work.

[0104] During emergency repairs, the drive unit rotates the motor shaft via a transmission joint, shortening the repair time for urgent faults and significantly improving work efficiency. This allows the outer tube to be promptly removed from the boiler, preventing heat-induced deformation and bending of the outer tube and damage to the boiler's heating surfaces, thus significantly improving safety and reducing the maintenance costs of the sootblower, especially the outer tube. Existing on-duty personnel can complete nighttime repairs without needing to dispatch additional maintenance staff, saving the time and costs associated with contacting and dispatching additional personnel during manual operations.

[0105] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Terms such as “part” or “component” appearing herein can refer to a single part or a combination of multiple parts. Terms such as “installation” or “installation” appearing herein can refer to one component being directly attached to another component or one component being attached to another component via an intermediary. A feature described in one embodiment herein may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0106] This application has been described through the above embodiments; however, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the described embodiments. Furthermore, those skilled in the art will understand that this application is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this application, all of which fall within the scope of protection claimed in this application. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A transmission joint for connecting a drive device and a soot blower, the drive device comprising a drive shaft, the soot blower comprising a motor shaft and an outer tube, the motor shaft rotating to drive the outer tube to move, characterized in that, The transmission joint connects the drive device and the soot blower. The transmission joint includes holes, including a first hole and a second hole, which are connected. The first hole is used to engage with the drive shaft, and the second hole is used to engage with the motor shaft. The drive device drives the transmission joint to rotate, thereby driving the motor shaft to rotate.

2. The transmission joint according to claim 1, characterized in that, The hole also includes a guide groove, which communicates with the second hole and protrudes from the second hole. The guide groove extends along the axial direction of the second hole.

3. The transmission joint according to claim 2, characterized in that, The second hole includes an inner peripheral surface, and the guide groove includes a first guide section, a second guide section, and a third guide section. The first guide section and the third guide section are both connected to the inner peripheral surface, and the second guide section is located between the first guide section and the third guide section.

4. The transmission joint according to claim 2, characterized in that, The guide groove is closer to the outside of the transmission joint in the radial direction of the second hole than the first hole.

5. The transmission joint according to claim 1, characterized in that, The first hole is a square hole.

6. The transmission joint according to claim 5, characterized in that, The first hole is formed by at least three straight line segments.

7. The transmission joint according to claim 1, characterized in that, The second hole is a circular hole.

8. The transmission joint according to claim 1, characterized in that, The dimension of the first hole along the radial direction of the second hole is smaller than the dimension of the second hole.

9. The transmission joint according to claim 1, characterized in that, The first hole is pluggably connected to the drive shaft, and the second hole is pluggably connected to the motor shaft.

10. A power tool, characterized in that, The power tool includes a drive unit and a transmission joint according to any one of claims 1-9, the drive unit including a drive shaft connected to the transmission joint, the drive shaft rotating to drive the transmission joint to rotate.

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