A heater for coupling installation

Abstract

The utility model discloses a kind of heaters for coupling installation, belong to spare part installation technical field, including furnace body, alternating coil is provided in furnace body, and bearing surface is provided on furnace body. Alternating coil is arranged in furnace body, bearing surface is contacted with workpiece, after alternating current is passed, eddy current is induced in metal workpiece such as coupling and joul heat is generated, coupling heating is realized. Alternating coil uses built-in flat coil, compared with helical coil, it is thinner, and the volume ratio is smaller, furnace body can be detached and used separately, it is convenient to carry and transport, and it is suitable for temporary use on site;Furnace body adds slide platform, and the whole equipment is more suitable for factory rapid heating, to improve work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of component installation technology, specifically a heater for coupling installation. Background Technology

[0002] As a key transmission component connecting the water pump and the motor, the pump coupling typically uses a zero-clearance fit (H7 / h6) to connect to the shaft end to ensure that slippage and loosening do not occur during transmission. During installation, to overcome assembly resistance caused by manufacturing errors, the coupling needs to be heated to thermally expand its inner bore, thus allowing it to be smoothly fitted onto the shaft end.

[0003] The existing heating methods mainly include the following: I. Heating with heaters for bearing coupling installation. This type of heater for coupling installation is relatively mature in bearing assembly, but water pump couplings are usually large in size and long in length, and the working space of ordinary bearing coupling installation heaters is insufficient to accommodate them, and their power configuration is difficult to meet the energy required for coupling heating, so they cannot be directly applied to coupling installation.

[0004] II. Heating with a heater for installing coil-type couplings. For example, CN116765748A discloses an induction heating disassembly and assembly device and its operation method for a reducer coupling. This type of equipment heats metal parts through an induction coil and is suitable for coupling-type workpieces. However, the size of the coil equipment needs to be increased to match the size of the coupling, and it is expensive and inconvenient to carry and use on site, which limits its popularity in water pump maintenance and field conditions.

[0005] III. Flame Heating. Directly heating the outer wall of the coupling using a flame gun or special gas flame is simple to operate, but it has several drawbacks: the heating temperature is uncontrollable, the heating is uneven, and there is a high risk of local overheating. In addition, the special gases used in hot work require special storage, and the approval and safety management are complicated, and the heating efficiency is also difficult to guarantee.

[0006] IV. Oil bath heating. Immersing the coupling in high-temperature oil for heating produces a more uniform temperature, but it has drawbacks such as long heating time, high oil consumption, and large equipment footprint, making it unsuitable for on-site operations. Utility Model Content

[0007] The purpose of this invention is to provide a heater for coupling installation to solve the problems mentioned in the prior art.

[0008] A heater for coupling installation is provided, comprising: The furnace body contains an alternating coil, and the furnace body has a bearing surface.

[0009] As a further embodiment of this utility model: the furnace body has two parts, and the bearing surfaces of the two furnace bodies are arranged opposite to each other.

[0010] The bearing surfaces of the two furnace bodies are arranged opposite each other, allowing the coupling to rest on one furnace body's bearing surface at one end and the other on the other. During heating, two sets of alternating flat coils are simultaneously energized from both ends of the coupling, and heat is transferred through contact between the bearing surfaces and the workpiece end faces, enabling heat to be conducted into the coupling from both ends simultaneously. Because the heating sources are distributed at both ends, heat is transferred bidirectionally along the axial direction, creating a uniform temperature convergence zone in the middle.

[0011] As a further embodiment of this utility model, it also includes a base, and the two furnace bodies can be detachably connected to the base respectively.

[0012] The two furnace bodies are detachably fixed to the base, which provides rigid support and positioning to ensure stability during heating. The furnace bodies can be detached for individual use, suitable for temporary installations outdoors. The coupling end face can be placed on the furnace heating surface, suitable for heating small couplings; alternatively, the furnace heating surface can cover the coupling end face, suitable for medium to large couplings, although the heating time will be longer than heating both furnace bodies simultaneously. The equipment supports two heating methods for couplings: horizontal placement supports the workpiece, suitable for heating small couplings; vertical placement clamps the coupling between two supporting surfaces, preventing large couplings from damaging the furnace body due to their own weight.

[0013] As a further embodiment of this utility model, it also includes a tilting table, and a furnace body is hinged to the base via the tilting table, with a locking element provided between the furnace body and the tilting table.

[0014] The tilting platform is connected to the base via a hinge, allowing the furnace body to tilt freely in both horizontal and vertical orientations. A locking mechanism secures the tilting platform in place after tilting, ensuring the furnace body remains stable and does not shift during heating.

[0015] As a further embodiment of this utility model: the tilting platform includes a base frame and a mounting platform, the furnace body and the mounting platform are detachably connected, the mounting platform is hinged to the base frame, and the base frame and the base are slidably connected.

[0016] The tilting table consists of a base frame and a mounting platform. The mounting platform, carrying the furnace body, is hinged to the base frame. During the tilting operation, the mounting platform can rotate relative to the base frame, enabling switching between horizontal and vertical heating modes. There is a degree of freedom between the base frame and the mounting platform, allowing the base frame to slide relative to the locking mechanism. This sliding freedom allows the base frame to fine-tune the contact tightness between the mounting platform and the locking mechanism, ensuring that the force applied to the locking mechanism after the mounting platform is tilted is fully transmitted, thus reducing the installation precision requirements between the locking mechanism and the mounting platform.

[0017] As a further embodiment of this utility model: the locking member includes abutting arms that are respectively hinged to both sides of the base, and abutting grooves that can accommodate the movable ends of the abutting arms are respectively provided on both sides of the flipping table.

[0018] When the tilting table is in a horizontal heating state, the stop arm and the stop groove of the tilting table form a limiting interference, keeping the tilting table fixed during heating and preventing horizontal displacement. When the tilting table is in a vertical heating state, the stop arm contacts the back of the tilting table, providing stable support and transferring the clamping force of the coupling to the base. Through this design, the stop arm provides bidirectional mechanical constraint on the tilting table, ensuring stable positioning of the furnace body in both horizontal and vertical working states.

[0019] As a further embodiment of this utility model, a gas spring is provided between the stop arm and the base.

[0020] The gas spring provides continuous preload, ensuring the stop arm remains pressed against the tilting table. When the tilting table is horizontal or vertical, the stop arm, under the action of the gas spring, remains firmly against the table, forming a stable mechanical lock. The gas spring's cushioning properties also absorb the impact force generated by operation or vibration, preventing the stop arm from automatically tilting due to inertia or external force and disengaging from the stop groove or back contact position, thus ensuring the tilting table remains locked at all times.

[0021] As a further embodiment of this utility model, it also includes a sliding table, wherein a furnace body can slide relative to the base via the sliding table, and a driving component is provided between the sliding table and the base.

[0022] During the heating process, the position of the slide can be adjusted by the drive assembly, thereby changing the clamping force of the furnace body on the coupling and achieving controllable clamping of the workpiece by the furnace body. By precisely controlling the position of the slide and the driving force, the coupling can be tightly clamped by the two furnace bodies when placed horizontally for heating, ensuring a stable heating process and avoiding damage to the furnace body or workpiece due to excessive clamping force.

[0023] As a further embodiment of this utility model: the driving assembly includes a lead screw arranged along the length direction of the base, and the slide and the lead screw are connected by a nut thread.

[0024] When the lead screw rotates, the slide table generates a precise linear feed along the length of the base. The lead screw can be driven by a motor or handwheel, allowing for precise adjustment of the slide table position, thereby controlling the clamping force of the furnace body on the coupling. This structure converts rotary motion into high-rigidity, high-precision linear displacement, ensuring that the furnace body's position remains constant and repeatable during heating. The lead screw's thread design has a self-locking characteristic. This self-locking mechanism ensures that even under the weight of the workpiece, vibration, or external impact during heating and operation, the slide table position will not move automatically, thus maintaining the stability of the clamping force and heating gap.

[0025] As a further embodiment of this invention, it also includes several support platforms located between the two furnace bodies, the support platforms being slidable relative to the base.

[0026] The support platform is used to support the middle part of the coupling or other suspended parts, so that the weight of the workpiece does not act entirely on the furnace body's bearing surface. The sliding function allows the support platform to be adjusted according to the length or position of the coupling, thereby providing uniform support force and ensuring that the coupling maintains stable contact with the bearing surface under horizontal heating conditions, preventing slippage and falling.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows: An alternating coil is arranged inside the furnace, with its bearing surface in contact with the workpiece. When an alternating current is applied, eddy currents are induced in the metal workpiece, such as the coupling, generating Joule heat to heat the coupling. The alternating coil uses a built-in flat coil, which is thinner and has a smaller volume ratio than a spiral coil, making the entire device easier to carry and transport. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this drawing or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this drawing. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the overall structure for mounting a heater on a coupling; Figure 2 Diagram showing the operating status of a heater installed on a coupling; Figure 3 This is a schematic diagram of a partial structure of the processor.

[0030] In the diagram: 1. Furnace body; 11. Bearing surface; 2. Base; 3. Tilting table; 31. Base frame; 32. Mounting platform; 33. Stop groove; 4. Slide table; 5. Locking element; 51. Stop arm; 6. Drive assembly; 7. Gas spring; 8. Bearing platform. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0032] Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without any inventive effort. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, any changes to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0033] However, there may be instances where unnecessary detailed descriptions are omitted. For example, detailed descriptions of well-known matters or repetitive descriptions of essentially the same structures may be omitted. This is to avoid unnecessarily lengthy descriptions and to facilitate understanding by those skilled in the art. Furthermore, the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand this application and are not intended to limit the subject matter of the claims.

[0034] Please see Figures 1-2 As shown in the embodiment of this utility model, a heater for installing a coupling includes a furnace body 1, an alternating coil is provided inside the furnace body 1, and a bearing surface 11 is provided on the furnace body 1.

[0035] Inside the furnace body 1 is a set of flat alternating coils. High-frequency alternating current flows through the coils, generating an alternating magnetic field around them. When the coupling is placed above the bearing surface 11, this alternating magnetic field passes through the coupling, inducing eddy currents within it. As these eddy currents flow inside the metal, the metal's resistance converts electrical energy into heat energy, thus achieving heating.

[0036] Depending on the size of the coupling, the heater for coupling installation has three heating methods. For small couplings, the coupling can be directly placed on the bearing surface 11 above the furnace body 1 for heating. For medium-sized couplings, the bearing surface 11 of the furnace body 1 is placed downwards above the coupling for heating to avoid the coupling damaging the furnace body 1. For large couplings, the bearing surfaces 11 of the two furnace bodies 1 are arranged vertically relative to the ground foundation and opposite each other. The coupling is laid horizontally, with both ends of the coupling contacting the bearing surfaces 11 of the two furnace bodies 1 respectively. This avoids the weight of the coupling being directly applied to the furnace body 1, and provides a heating source from both ends of the coupling. Heat is transferred bidirectionally along the axial direction, forming a uniform temperature convergence zone in the middle.

[0037] The furnace body is equipped with a temperature controller and an external temperature probe. The temperature probe can be firmly attached to the outer surface of the coupling (iron-based material) to measure the real-time temperature. The temperature controller can be set to a temperature (generally 130-160℃). When the temperature is reached, a buzzing sound is emitted and the furnace automatically enters the heat preservation mode to achieve precise temperature control.

[0038] The heater for coupling installation also includes a base 2. Two furnace bodies 1 are detachably fixed to the base 2. The base provides rigid support and positioning, ensuring the furnace bodies 1 remain stable during heating. The base 2 supports two heating methods: horizontal placement and vertical opposition of the furnace bodies 1. In the horizontal position, the bearing surface 11 supports the workpiece; in the vertical position, the coupling is clamped between the two bearing surfaces 11, thus preventing the large coupling from damaging the furnace body 1 due to its own weight. The furnace body can be detached from the base 2 for independent use, facilitating transport and making it suitable for temporary on-site use.

[0039] A rotating platform 3 is also provided on the base 2. A furnace body 1 is hinged to the base 2 via the rotating platform 3, and the connection between the furnace body 1 and the rotating platform 3 is detachable. That is, after the furnace body 1 is fixed on the rotating platform 3, when the rotating platform 3 is in a horizontal position, the bearing surface 11 of the furnace body 1 faces vertically upward, and the coupling can be directly placed on the furnace body 1 for heating; when the rotating platform 3 is rotated to a vertical position, the bearing surface 11 of the furnace body 1 extends vertically, realizing a vertically opposed heating mode.

[0040] Furthermore, the tilting platform 3 includes a base frame 31 and a mounting platform 32. The furnace body 1 is detachably connected to the mounting platform 32, and the mounting platform 32 is hinged to the base frame 31. After the mounting platform 32 rotates relative to the base frame 31, the furnace body 1 can be changed from a horizontal position to a vertical position.

[0041] A locking element 5 is provided between the furnace body 1 and the tilting platform 3. The locking element 5 is used to lock the tilting platform 3 in its vertical position after rotation, resisting the pressure exerted on the furnace body 1 by the coupling and preventing the tilting platform 3 from tipping over. More specifically, the locking element 5 is used to lock the mounting platform 32 in its vertical position after rotation. To ensure that the mounting platform 32 can mate with the locking element 5 after the position is changed, the base frame 31 is slidably connected to the base 2, thereby allowing adjustment of the relative position of the mounting platform 32 and the locking element 5.

[0042] In one specific embodiment, the base 2 has two inner sides with grooves, and the base frame 31 has rollers on both sides. The rollers are confined within the grooves, so that the base frame 31 can slide while the base frame 31 does not rotate synchronously during the rotation of the mounting platform 32 due to the interference of the top surface of the grooves.

[0043] Furthermore, the locking member 5 includes abutment arms 51 respectively hinged to both sides of the base 2, and abutment grooves 33 are respectively provided on both sides of the tilting table 3 to accommodate the movable ends of the abutment arms 51. The abutment arms 51 include an arm end hinged to the base 2 and abutment end that can contact the tilting table 3. When the furnace body 1 is horizontal, the abutment end of the abutment arm 51 is confined within the abutment groove 33; when the furnace body 1 needs to be switched to a vertically opposed state, the abutment arms 51 first flip outwards from the base 2 to disengage from the abutment groove 33, the tilting table 3 is rotated, and then the abutment arms 51 flip inwards from the base 2 to contact the rear wall of the tilting table 3 to form abutment.

[0044] In a further embodiment, when the furnace body 1 is horizontal, the abutting end of the abutting arm 51 is confined within the abutting groove 33, restricting the freedom of the base frame 31 to slide on the base 2; when the furnace body 1 needs to be switched to a vertically opposed state, the abutting arm 51 first flips outward toward the base 2 to disengage from the abutting groove 33, the mounting platform 32 is rotated, and then the abutting arm 51 is flipped inward toward the base 2, and the sliding base frame 31 makes the rear wall of the mounting platform 32 and the abutting end of the abutting arm 51 come into close contact.

[0045] Furthermore, please refer to Figure 3 As shown, a platform is provided at the hinge end of the stop arm 51, and the platform can rotate relative to the base 2. A gas spring 7 is provided between the platform and the base 2. The gas spring 7 provides preload and stroke assistance to the stop arm 51, and continuously provides holding force and damping after locking to prevent the stop arm 51 from accidentally disengaging from the flipping table 3.

[0046] Please see Figures 1-2 As shown, the heater for coupling installation also includes a slide table 4. A furnace body 1 can slide relative to the base 2 via the slide table 4. A drive assembly 6 is provided between the slide table 4 and the base 2. That is, the drive assembly 6 drives the slide table 4 to slide on the base 2 and provides a locking force. After the furnace body 1 on the tilting table 3 abuts against the locking member 5, the coupling is placed between the two furnace bodies 1, and the sliding slide table 4 brings the two furnace bodies 1 closer together to clamp the coupling.

[0047] The furnace body 1 on the slide table 4 can exist only in a vertical position. Alternatively, a locking component can be installed between the furnace body 1 and the slide table 4 after flipping, allowing the furnace body 1 to switch between the two states, thus improving the flexibility of use.

[0048] In one specific embodiment, the base 2 has two inner sides with grooves, and the slide table 4 has rollers on both sides. The rollers are confined within the grooves to enable the slide table 4 to slide.

[0049] Specifically, the drive assembly 6 includes a lead screw arranged along the length of the base 2, and the slide 4 is threadedly connected to the lead screw via a nut. A hand crank is provided at one end of the lead screw for controlling its rotation. The rotation of the lead screw causes the nut to move the slide 4 on the base 2. The hand crank allows for manual control, facilitating the sensing of the clamping force between the two furnace bodies 1 and preventing excessive stroke that could damage the furnace bodies 1.

[0050] The heater for coupling installation also includes several support platforms 8 located between the two furnace bodies 1, which are slidable relative to the base 2. The support platforms 8 are used to support the coupling and eliminate friction between the coupling and the bearing surface 11. Since there are usually two parts with different outer diameters on the coupling, two support platforms 8 are arranged, one for supporting the two outer surfaces of the coupling.

[0051] In one specific embodiment, a lifting platform is provided on the bearing platform 8. The lifting platform is raised and lowered relative to the bearing platform 8 by air source or hydraulic drive to adapt to the bearing requirements of different models and specifications of couplings.

[0052] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A heater for installing a coupling, characterized in that, include: Furnace body (1), an alternating coil is provided inside the furnace body (1), a bearing surface (11) is provided on the furnace body (1), there are two furnace bodies (1), and the bearing surfaces (11) of the two furnace bodies (1) are arranged opposite to each other; The base (2) and the two furnace bodies (1) can be detachably connected to the base (2); A rotating platform (3) is provided, and a furnace body (1) is hinged to a base (2) via the rotating platform (3). A locking element (5) is provided between the furnace body (1) and the rotating platform (3). A slide (4) is provided, and a furnace body (1) can slide relative to the base (2) via the slide (4). A drive assembly (6) is provided between the slide (4) and the base (2).

2. A heater for coupling installation according to claim 1, characterized in that, The flipping table (3) includes a base frame (31) and a mounting platform (32). The furnace body (1) and the mounting platform (32) are detachably connected. The mounting platform (32) is hinged to the base frame (31). The base frame (31) and the base (2) are slidably connected.

3. A heater for coupling installation according to claim 1, characterized in that, The locking member (5) includes a stop arm (51) hinged to both sides of the base (2), and the two sides of the flipping table (3) are respectively provided with a stop groove (33) that can accommodate the movable end of the stop arm (51).

4. A heater for coupling installation according to claim 3, characterized in that, A gas spring (7) is provided between the stop arm (51) and the base (2).

5. A heater for coupling installation according to claim 1, characterized in that, The drive assembly (6) includes a lead screw arranged along the length of the base (2), and the slide (4) is connected to the lead screw by a nut thread.

6. A heater for coupling installation according to claim 1, characterized in that, It also includes several support platforms (8) located between the two furnace bodies (1), the support platforms (8) being slidable relative to the base (2).

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