Electric heating element disassembly and assembly tooling

Abstract

This utility model belongs to the technical field of electric heating element disassembly and assembly tools, and discloses an electric heating element disassembly and assembly fixture, including a base and a conversion ring. One end of the base can be embedded in a first insertion slot, and the other end has an installation interface for inserting a universal wrench. The universal wrench allows the base to be rotated, causing the first electric heating element to be screwed into or out of the water tank. The outer surface of the base has a sliding groove extending along its length. The conversion ring is sleeved on the outer surface of the base, and the inner wall of the conversion ring has a protrusion that mates with the sliding groove, allowing the conversion ring to slide between a retracted position and a working position. In the retracted position, the base can be embedded in the first insertion slot; in the working position, the conversion ring can be embedded in a second insertion slot. Rotating the base allows the second electric heating element to be screwed into or out of the water tank. This utility model can realize the disassembly and assembly of electric heating elements of different specifications, offering convenient operation in confined spaces while protecting the surface of the heating element.

Description

Technical Field

[0001] This utility model relates to the technical field of electric heating tube disassembly and assembly tools, and in particular to an electric heating tube disassembly and assembly fixture. Background Technology

[0002] Electric heating elements are core components in heating devices such as water tanks, and are widely used in domestic water heaters, industrial heating systems, and other fields. Due to their long-term operation in high-temperature, high-pressure environments, electric heating elements are prone to aging, damage, or scaling, requiring regular disassembly, maintenance, or replacement. However, electric heating elements are typically threaded to the side wall of the water tank, and disassembly often requires specialized tools, making the process particularly difficult, especially in space-constrained situations.

[0003] Currently, the most common tools for disassembling and assembling electric heating elements on the market are pipe wrenches or single-size sockets. However, the operating space for disassembling and assembling electric heating elements is small, and the frequency of clamping and rotating with pipe wrenches is slow, making it extremely inconvenient to disassemble the heating elements. In addition, pipe wrenches will leave clamp marks on the outer wall of the electric heating elements, affecting the appearance of the equipment. On the other hand, single-size sockets are only suitable for a single specific model of electric heating element. For different models of electric heating elements, users usually need to equip themselves with multiple sizes of socket tools, and need to frequently change tools when installing and disassembling electric heating elements, thereby reducing the efficiency of installation and maintenance.

[0004] Therefore, there is an urgent need to propose a tooling for disassembling and assembling electric heating tubes to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a tooling for disassembling and assembling electric heating tubes, so as to realize the quick disassembly and assembly of electric heating tubes of different specifications, while ensuring convenient operation in a confined space and protection of the surface of the heating tube.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An electric heating element disassembly and assembly fixture is used to disassemble and assemble an electric heating element from the side wall of a water tank. The electric heating element consists of a first electric heating element and a second electric heating element. The first electric heating element has a first connecting end with a first insertion groove. The second electric heating element has a second connecting end with a second insertion groove. The first insertion groove and the second insertion groove are of different sizes. The electric heating element disassembly fixture includes:

[0008] The base has one end that can be embedded in the first insertion slot, and the other end is provided with an installation interface for inserting a universal wrench. The universal wrench can rotate the base and drive the first electric heating tube to be screwed into or out of the side wall of the water tank. The outer surface of the base is provided with a sliding groove, and the sliding groove extends along the length of the base.

[0009] A conversion ring is sleeved on the outer surface of the base. The inner wall of the conversion ring has a protrusion that mates with the sliding groove, allowing the conversion ring to slide between a retracted position and a working position. When the conversion ring is in the retracted position, the base can be embedded in the first insertion groove. When the conversion ring is in the working position, the conversion ring can be embedded in the second insertion groove. Furthermore, by rotating the base, the second electric heating tube can be screwed into or out of the side wall of the water tank.

[0010] Preferably, the base includes a first base body and a second base body connected sequentially along a first direction, the cross-sectional dimension of the second base body along a second direction is smaller than the cross-sectional dimension of the first base body along the second direction, the sliding groove is formed in the first base body, the mounting interface is formed in the second base body, and the first direction is perpendicular to the second direction.

[0011] Preferably, the outer surface of the base is provided with at least two sliding grooves, and the sliding grooves are circumferentially spaced around the base. The inner wall of the conversion ring is provided with at least two protrusions spaced apart, and the protrusions are inserted into the sliding grooves one by one.

[0012] Preferably, the bottom of the first plug slot is provided with a terminal post, and one end of the base is provided with a receiving groove. When the base is embedded in the first plug slot, the terminal post can extend into the receiving groove.

[0013] Preferably, both the first and second plug-in slots have grounding terminals on their walls. One end of the base has a first notch. When the base is embedded in the first plug-in slot, the grounding terminal in the first plug-in slot is accommodated in the first notch. One end of the conversion ring has a second notch. When the conversion ring is embedded in the second plug-in slot, the grounding terminal in the second plug-in slot is accommodated in the second notch.

[0014] Preferably, when the conversion ring is in the working position, the end face of the conversion ring embedded in the second insertion slot is flush with the end face of the base embedded in the first insertion slot.

[0015] Preferably, both the outer surface of the base and the inner wall of the conversion ring are smooth mating surfaces.

[0016] Preferably, the inner wall of the conversion ring is provided with a first limiting groove, and the outer surface of the base is provided with a first limiting protrusion. When the conversion ring is in the retracted position, the first limiting protrusion is embedded in the first limiting groove.

[0017] Preferably, the inner wall of the conversion ring is provided with a second limiting groove, and the outer surface of the base is provided with a second limiting protrusion. When the conversion ring is in the working position, the second limiting protrusion is embedded in the second limiting groove.

[0018] Preferably, both the first and second insertion slots are regular hexagonal prism slots.

[0019] The beneficial effects of this utility model are:

[0020] The sliding fit structure between the base and the adapter ring allows the same tool to accommodate heating element slots of different sizes. When the adapter ring is in the retracted position, the base directly mates with the first heating element; when slid to the working position, the adapter ring mates with the second heating element, effectively solving the problem of frequent tool changes. Simultaneously, the matching design of the groove and the protrusion ensures the accuracy and stability of the adapter ring's positioning. The mounting interface design at the end of the base allows for the use of a universal wrench for insertion and rotation. Compared to clamping and rotating, this design is more suitable for applying force in confined spaces, resulting in higher disassembly efficiency. Furthermore, the entire fixture employs an embedded torque transmission method. The base, by embedding in the first slot, drives the first heating element to rotate, and the adapter ring, by embedding in the second slot, drives the second heating element to rotate, avoiding damage to the heating element surface caused by traditional external clamping tools. Attached Figure Description

[0021] Figure 1 This is a first structural schematic diagram of the first electric heating tube and the electric heating tube assembly / disassembly fixture described in this embodiment of the utility model;

[0022] Figure 2 This is a second structural schematic diagram of the first electric heating tube and the electric heating tube assembly / disassembly fixture described in this embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the conversion ring not installed on the base according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the conversion ring installed on the base according to an embodiment of the present invention;

[0025] Figure 5 This is a front view of the conversion ring of the electric heating tube disassembly and assembly fixture described in this embodiment of the present invention in the retracted position;

[0026] Figure 6 This is a front view of the conversion ring of the electric heating tube disassembly and assembly fixture described in this embodiment of the present invention in the working position;

[0027] Figure 7 This is a schematic diagram of the structure of the electric heating tube assembly / disassembly fixture connected to the first connection end according to an embodiment of the present invention.

[0028] In the picture:

[0029] 1. Base; 11. First base body; 110. Receiving groove; 111. Sliding groove; 112. First notch; 12. Second base body; 120. Mounting interface;

[0030] 2. Transition ring; 21. Bump; 22. Second notch;

[0031] 100. First electric heating element; 101. First connecting end; 1010. First plug slot; 102. Terminal. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the first feature can include the feature and the first feature being in direct contact, or it can include the feature and the first feature not being in direct contact but being in contact through another feature between them. Furthermore, "above," "over," and "on top" of the first feature includes the feature being directly above or diagonally above the first feature, or simply indicates that the feature is at a higher horizontal level than the first feature. "Below," "below," and "under" the first feature includes the feature being directly below or diagonally below the first feature, or simply indicates that the feature is at a lower horizontal level than the first feature.

[0035] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] like Figures 1-7 As shown, this utility model provides a tooling for disassembling and assembling an electric heating tube, used to disassemble and assemble the electric heating tube to the side wall of a water tank.

[0037] The electric heating tube is divided into a first electric heating tube 100 and a second electric heating tube. The first electric heating tube 100 is provided with a first connecting end 101, which has a first insertion groove 1010. The second electric heating tube is provided with a second connecting end, which has a second insertion groove. The first insertion groove 1010 and the second insertion groove have different sizes.

[0038] The electric heating element disassembly fixture includes a base 1 and a conversion ring 2. One end of the base 1 can be embedded in the first insertion slot 1010, and the other end is provided with an installation interface 120 for inserting a universal wrench. The universal wrench can rotate the base 1 and drive the first electric heating element 100 to be screwed into or out of the water tank side wall. The outer surface of the base 1 is provided with a sliding groove 111, and the sliding groove 111 extends along the length of the base 1. The conversion ring 2 is sleeved on the outer surface of the base 1. The inner wall of the conversion ring 2 is provided with a protrusion 21 that cooperates with the sliding groove 111, so that the conversion ring 2 can slide between the retracted position and the working position. When the conversion ring 2 is in the retracted position, the base 1 can be embedded in the first insertion slot 1010. When the conversion ring 2 is in the working position, the conversion ring 2 can be embedded in the second insertion slot, and by rotating the base 1, the second electric heating element can be screwed into or out of the water tank side wall.

[0039] The sliding fit structure between the base 1 and the conversion ring 2 allows the same tool to accommodate different sizes of electric heating tube insertion slots. When the conversion ring 2 is in the retracted position, the base 1 can directly match the first electric heating tube 100; when slid to the working position, the conversion ring 2 can accommodate the second electric heating tube, effectively solving the problem of frequent tool changes. Simultaneously, the matching design of the sliding groove 111 and the protrusion 21 ensures the accuracy and stability of the conversion ring 2's positioning. The mounting interface 120 at the end of the base 1 allows for the use of a universal wrench for insertion and rotation. Compared to clamping and rotation, this design is more suitable for applying force in confined spaces, resulting in higher disassembly efficiency. Furthermore, the entire fixture adopts an embedded torque transmission method. The base 1, by embedding in the first insertion slot 1010, can drive the first electric heating tube 100 to rotate, and the conversion ring 2, by embedding in the second insertion slot, can drive the second electric heating tube to rotate, avoiding damage to the surface of the electric heating tubes caused by traditional external clamping tools.

[0040] In this application, the first electric heating tube 100 is an electric heating tube with an aperture of φ45mm, and the second electric heating tube is an electric heating tube with an aperture of φ56mm.

[0041] Specifically, such as Figure 2As shown, the bottom of the first insertion slot 1010 is provided with a terminal 102, and one end of the base 1 is provided with a receiving groove 110. When the base 1 is embedded in the first insertion slot 1010, the terminal 102 can extend into the receiving groove 110. This clearance design allows the tooling to be adapted to various electric heating tubes with terminal 102, expanding the applicability of the tool while maintaining the original torque transmission efficiency. When the base 1 is embedded in the first insertion slot 1010, the receiving groove 110 provides sufficient clearance space for the terminal 102, ensuring that the tooling can be fully inserted into place for stable engagement, and avoiding the risk of accidental contact between the tool and electrical components.

[0042] In this embodiment, the receiving groove 110 is a regular hexagonal prism groove.

[0043] In other embodiments, the receiving groove 110 may also be a cylindrical groove, and the shape of the receiving groove 110 is not specifically limited here.

[0044] Specifically, such as Figure 2 and Figure 3 As shown, both the first insertion slot 1010 and the second insertion slot have grounding terminals on their walls. One end of the base 1 has a first notch 112. When the base 1 is embedded in the first insertion slot 1010, the grounding terminal in the first insertion slot 1010 is accommodated within the first notch 112. One end of the conversion ring 2 has a second notch 22. When the conversion ring 2 is embedded in the second insertion slot, the grounding terminal in the second insertion slot is accommodated within the second notch 22. This avoidance design allows the tool to be compatible with various safety-type electric heating tubes with grounding terminals, significantly improving the tooling's versatility and applicability. The cooperation between the first notch 112 and the second notch 22 and the grounding terminals maintains the original torque transmission efficiency while protecting the grounding protection function of the electric heating tube.

[0045] Specifically, such as Figure 3 and Figure 4 As shown, the base 1 includes a first base body 11 and a second base body 12 connected sequentially along a first direction. The cross-sectional dimension of the second base body 12 along the second direction is smaller than that of the first base body 11 along the second direction. A slide groove 111 is formed in the first base body 11, and a mounting interface 120 is formed in the second base body 12. The first direction is perpendicular to the second direction. The stepped design of the first base body 11 and the second base body 12 allows the slide groove 111 to have sufficient space, ensuring that the sliding of the conversion ring 2 is more stable and reliable. The smaller cross-sectional dimension of the second base body 12 reduces the overall weight and provides a compact space layout for the mounting interface 120, making the tool lighter and easier to operate.

[0046] In this embodiment, the first base 11 is a regular hexagonal prism, and the second base 12 consists of two connected cylinders with different cross-sectional sizes along the second direction, and the cylinder connecting the first base 11 has a larger cross-section.

[0047] Specifically, both the first insertion slot 1010 and the second insertion slot are regular hexagonal prism slots. The regular hexagonal prism slots, together with the hexagonal mating surfaces of the base 1 and the conversion ring 2, form a stable torque transmission structure, preventing relative slippage during rotation and ensuring the reliability of torque transmission.

[0048] Specifically, such as Figure 3 and Figure 4 As shown, the outer surface of the base 1 is provided with at least two grooves 111, and the grooves 111 are circumferentially spaced around the base 1. The inner wall of the conversion ring 2 is provided with at least two protrusions 21, and the protrusions 21 are inserted into the grooves 111 one by one. The mating structure of multiple grooves 11 and multiple protrusions 21 significantly enhances the guiding accuracy of the conversion ring 2 during the sliding process and effectively prevents the conversion ring 2 from deflecting. The circumferentially spaced grooves 111 and protrusions 21 also give the tooling better fault tolerance, and can maintain good mating performance even with slight machining errors or wear.

[0049] In this embodiment, the base 1 has grooves 111 on two opposite sides, and the inner wall of the conversion ring 2 has protrusions 21 on both opposite sides. This symmetrically distributed connection method makes the torque transmission more uniform and balanced.

[0050] In other embodiments, the base 1 may be provided with three grooves 111 and the conversion ring 2 may be provided with three protrusions 21. The number of grooves 111 and protrusions 21 is not specifically limited here.

[0051] Specifically, such as Figure 5 and Figure 6 As shown, when the conversion ring 2 is in the working position, the end face of the conversion ring 2 that is embedded in the second insertion slot is flush with the end face of the base 1 that is embedded in the first insertion slot. This flush structure allows the conversion ring 2 and the base 1 to exert their overall strength when transmitting torque, improving stability during rotation.

[0052] In this embodiment, when the end face of the conversion ring 2 embedded in the second insertion slot is flush with the end face of the base 1 embedded in the first insertion slot, the second notch 22 is aligned with the first notch 112.

[0053] Specifically, both the outer surface of the base 1 and the inner wall of the conversion ring 2 are smooth mating surfaces. The smooth mating surfaces significantly reduce the frictional resistance when the conversion ring 2 slides on the base 1, making the mode switching operation smoother and less strenuous, and allowing the operator to easily switch the conversion ring 2 between the working position and the retracted position.

[0054] Specifically, the inner wall of the conversion ring 2 is provided with a first limiting groove, and the outer surface of the base 1 is provided with a first limiting protrusion. When the conversion ring 2 is in the retracted position, the first limiting protrusion is embedded in the first limiting groove. This mechanical interlocking structure effectively prevents accidental displacement of the conversion ring during use, ensuring that the base and the first insertion groove always maintain the best fit.

[0055] Specifically, the inner wall of the conversion ring 2 is provided with a second limiting groove, and the outer surface of the base 1 is provided with a second limiting protrusion. When the conversion ring 2 is in the working position, the second limiting protrusion is embedded in the second limiting groove. The addition of the second limiting protrusion not only eliminates the axial movement that may occur in the conversion ring 2 during torque transmission, but also enhances the rigidity of the overall structure through mechanical interlocking, so that the tooling can still maintain excellent anti-deformation ability under high torque conditions.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An electric heating tube dismounting and mounting tool for mounting and dismounting an electric heating tube on a side wall of a water tank, the electric heating tube being divided into a first electric heating tube (100) and a second electric heating tube, the first electric heating tube (100) being provided with a first connecting end head (101) having a first plug-in slot (1010), the second electric heating tube being provided with a second connecting end head having a second plug-in slot, the first plug-in slot (1010) and the second plug-in slot being different in size, characterized in that, The electric heating element disassembly fixture includes: The base (1) has one end that can be embedded in the first insertion slot (1010) and the other end is provided with an installation interface (120) for inserting a universal wrench. The universal wrench can rotate the base (1) and drive the first electric heating tube (100) to be screwed into or out of the side wall of the water tank. The outer surface of the base (1) is provided with a sliding groove (111) and the sliding groove (111) extends along the length direction of the base (1). A conversion ring (2) is sleeved on the outer surface of the base (1). The inner wall of the conversion ring (2) is provided with a protrusion (21) that cooperates with the sliding groove (111), so that the conversion ring (2) can slide between the retracted position and the working position. When the conversion ring (2) is in the retracted position, the base (1) can be embedded in the first insertion groove (1010). When the conversion ring (2) is in the working position, the conversion ring (2) can be embedded in the second insertion groove. By rotating the base (1), the second electric heating tube can be driven to rotate into or out of the side wall of the water tank.

2. The electric heating tube dismounting tool according to claim 1, wherein The base (1) includes a first base body (11) and a second base body (12) connected sequentially along a first direction. The cross-sectional dimension of the second base body (12) along the second direction is smaller than the cross-sectional dimension of the first base body (11) along the second direction. The slide groove (111) is formed in the first base body (11), and the mounting interface (120) is formed in the second base body (12). The first direction is perpendicular to the second direction.

3. The electric heating tube dismounting tool according to claim 1, wherein The outer surface of the base (1) is provided with at least two grooves (111), and the grooves (111) are circumferentially spaced around the base (1). The inner wall of the conversion ring (2) is provided with at least two protrusions (21), and the protrusions (21) are inserted into the grooves (111) one by one.

4. The electric heating tube dismounting tool according to claim 1, wherein The bottom of the first plug slot (1010) is provided with a terminal post (102), and one end of the base (1) is provided with a receiving groove (110). When the base (1) is embedded in the first plug slot (1010), the terminal post (102) can extend into the receiving groove (110).

5. The electric heating tube dismounting tool according to claim 1, wherein The first plug slot (1010) and the second plug slot are both provided with grounding terminals. The base (1) has a first notch (112) at one end. When the base (1) is embedded in the first plug slot (1010), the grounding terminal in the first plug slot (1010) is accommodated in the first notch (112). The conversion ring (2) has a second notch (22) at one end. When the conversion ring (2) is embedded in the second plug slot, the grounding terminal in the second plug slot is accommodated in the second notch (22).

6. The electric heating tube dismounting tool according to claim 1, wherein When the conversion ring (2) is in the working position, the end face of the conversion ring (2) embedded in the second insertion slot is flush with the end face of the base (1) embedded in the first insertion slot.

7. The electric heating tube dismounting tool according to claim 1, wherein The outer surface of the base (1) and the inner wall of the conversion ring (2) are both smooth mating surfaces.

8. The electric heating tube dismounting tool according to claim 1, wherein The inner wall of the conversion ring (2) is provided with a first limiting groove, and the outer surface of the base (1) is provided with a first limiting protrusion. When the conversion ring (2) is in the retracted position, the first limiting protrusion is embedded in the first limiting groove.

9. The electric heating tube disassembly and assembly fixture according to claim 1, characterized in that, The inner wall of the conversion ring (2) is provided with a second limiting groove, and the outer surface of the base (1) is provided with a second limiting protrusion. When the conversion ring (2) is in the working position, the second limiting protrusion is embedded in the second limiting groove.

10. The electric heating tube dismounting tool according to any one of claims 1-9, characterized in that, Both the first insertion slot (1010) and the second insertion slot are regular hexagonal prism slots.

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