Coaxial winch

Abstract

The utility model discloses a coaxial winch which comprises a motor, a winding drum, a first shaft, a second shaft, a fixing support and a transmission support. The transmission support is fixed to the fixing support, the first shaft, the second shaft and the winding drum are all rotationally installed on the transmission support, the first shaft is in transmission connection with the second shaft, the second shaft is in transmission connection with the winding drum, the first shaft and the winding drum are coaxially arranged, a cavity is formed in the winding drum, the transmission support penetrates through the cavity of the winding drum, and the first shaft and the second shaft are both arranged in the cavity. A braking device used for braking the winding drum is arranged between the fixing supports, and the motor is installed on the fixing supports and is in transmission connection with the first shaft. Therefore, compared with a heteroaxial winch, the space occupancy rate is smaller, the weight is lighter, meanwhile, compared with a traditional coaxial winch of a planetary structure, the number of parts is smaller, the manufacturing cost is lower, and transmission noise is easier to control.

Description

Technical Field

[0001] This utility model relates to the field of winch equipment, and in particular to a coaxial winch. Background Technology

[0002] Winches have a wide range of applications, including construction, mining, shipbuilding, and hoisting industries, primarily for lifting, pulling, transporting, and hoisting. After years of development, the market demand for winch technology has been increasing. Currently, most coaxial winches on the market use a planetary transmission structure. While this structure takes up less space than off-axis winches, it is difficult to control noise and has a relatively higher manufacturing cost. Utility Model Content

[0003] To address the problems of complex internal transmission structures and high noise in existing winches, the purpose of this invention is to provide a coaxial winch with a simpler, more compact structure, smaller size, and lower operating noise.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: including a motor, a drum, a first shaft, a second shaft, a fixed bracket, and a transmission support; the transmission support is fixed on the fixed bracket, the first shaft, the second shaft, and the drum are all rotatably mounted on the transmission support, the first shaft and the second shaft are connected in transmission, the second shaft is connected in transmission to the drum, the first shaft and the drum are coaxially arranged, a cavity is provided inside the drum, the transmission support passes through the cavity of the drum, the first shaft and the second shaft are both arranged in the cavity, a braking device for braking the drum is provided between the fixed brackets, the motor is mounted on the fixed bracket, and the motor is connected in transmission to the first shaft.

[0005] Preferably, both the first shaft and the second shaft are gear shafts, with an intermediate gear fixed on the second shaft. The intermediate gear meshes with the first shaft, and the second shaft meshes with an internal gear ring fixed on the inner wall of the drum.

[0006] Preferably, the external teeth on the first shaft, the intermediate gear, the external teeth on the second shaft, and the internal teeth on the internal gear ring are all helical teeth.

[0007] Preferably, the left end of the transmission support is provided with a first positioning groove, and the side of the transmission support is provided with a second positioning groove. The first positioning groove is connected to the first positioning groove through a first clearance hole. The first shaft is rotatably installed in the first positioning groove through a first bearing and a second bearing. The second shaft is rotatably installed in the second positioning groove through a third bearing and a fourth bearing. Part of the intermediate gear passes through the first clearance hole and meshes with the first shaft.

[0008] Preferably, the first positioning groove is provided at the left end of the transmission support, the right end of the first positioning groove is provided with a lubrication groove, the right end of the transmission support is provided with an oil hole, the oil hole is connected to the lubrication groove, and an oil level indicator is fixed at the right end of the transmission support, which can block the right end of the oil hole.

[0009] Preferably, a vent groove communicating with an oil hole is provided on the side of the transmission support, and a vent plug is installed at the vent groove; the vent plug is fixed to the transmission support by an extension rod.

[0010] Preferably, the drum is equipped with inlet / outlet plugs for filling and discharging oil into the cavity.

[0011] Preferably, the drum includes a drum body, a first drum cover and a second drum cover, the first drum cover and the second drum cover are sleeved on the transmission support, the first drum cover and the second drum cover are rotatably mounted on the transmission support, the drum body is located between the first drum cover and the second drum cover and is fixedly connected; the first drum cover, the drum body and the second drum cover cooperate to form the cavity of the drum.

[0012] Preferably, the fixed bracket is provided with a second clearance hole, which is located below the drum. The traction cable is wound on the drum, and one end of the traction cable can extend out of the fixed bracket through the second clearance hole.

[0013] Preferably, the braking device includes a brake disc and a caliper brake. The brake disc is fitted and fixed on the drum, and the caliper brake is mounted on a fixed bracket. The caliper brake can clamp the brake disc to stop the drum from rotating.

[0014] The beneficial effects of the technical solution of this utility model are as follows: all transmission components on the winch are connected in series by a transmission support, and the above solution integrates the transmission components inside the drum; this results in a smaller space occupation and lighter weight compared to off-axis winches, and fewer parts, lower manufacturing cost, and easier control of transmission noise compared to traditional planetary coaxial winches. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the coaxial winch in Example 1;

[0016] Figure 2 This is a schematic diagram of the connection structure between the motor and the fixed bracket in Example 2;

[0017] Figure 3 This is a schematic diagram of the transmission support in Example 1.

[0018] Reference numerals: 101, motor; 102, caliper brake;

[0019] 201. First shaft; 202. Spline sleeve; 203. Intermediate gear; 204. Second shaft; 205. Internal gear ring; 2051. Second connecting part; 206. Cylinder body; 2061. First connecting part; 207. Traction cable; 208. First cylinder cover; 209. Second cylinder cover; 2091. Fourth connecting part; 2092. Sixth connecting part; 210. Brake disc;

[0020] 301. Fixed bracket; 3011. Second clearance hole; 302. Transmission support; 3021. First positioning groove; 3022. Second positioning groove; 3023. First clearance hole; 3024. Oil hole; 3025. Lubrication groove; 3026. Assembly groove; 303. Adjusting cover; 304. End cover;

[0021] 401. Oil level indicator; 402. Breather plug; 403. Oil inlet / outlet plug;

[0022] 501, First bearing; 502, Second bearing; 503, Third bearing; 504, Fourth bearing; 505, Sixth bearing; 506, Second oil seal; 507, Fifth bearing; 508, First oil seal. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements 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.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the 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 the 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" the 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.

[0028] The directions described in the following embodiments are as follows: Figure 1 The directions shown are as follows: the position of the motor is to the left, the position of the vent plug is to the right, and the position of the caliper brake is to the top. Example

[0029] like Figure 1 and Figure 3 The coaxial winch shown includes a motor 101, a drum, a first shaft 201, a second shaft 204, a fixed bracket 301, and a transmission support 302. The transmission support 302 is fixed on the fixed bracket 301. The first shaft 201, the second shaft 204, and the drum are all rotatably mounted on the transmission support 302. The first shaft 201 and the second shaft 204 are drive-connected. The second shaft 204 is drive-connected to the drum. The first shaft 201 and the drum are coaxially arranged. A cavity is provided inside the drum. The transmission support 302 passes through the cavity of the drum. The first shaft 201 and the second shaft 204 are both arranged in the cavity. A braking device for braking the drum is provided between the fixed brackets 301. The motor 101 is mounted on the fixed bracket 301 and is drive-connected to the first shaft 201.

[0030] With this configuration, all the transmission components on the winch are connected in series through a transmission support 302, and the above scheme integrates the transmission components inside the drum. This results in a smaller space occupation and lighter weight compared to off-axis winches, and fewer parts, lower manufacturing costs, and easier control of transmission noise compared to traditional planetary coaxial winches.

[0031] In this embodiment, both the first shaft 201 and the second shaft 204 are gear shafts. An intermediate gear 203 is fixed on the second shaft 204, and the intermediate gear 203 meshes with the first shaft 201. The second shaft 204 meshes with an internal gear ring 205 fixed to the inner wall of the drum. The external teeth on the first shaft 201, the intermediate gear 203, the second shaft 204, and the internal teeth of the internal gear ring 205 are all helical teeth. All of these teeth have undergone hardening and grinding treatment.

[0032] In this embodiment, a first positioning groove 3021 is provided at the left end of the transmission support 302, and a second positioning groove 3022 is provided on the side of the transmission support 302. The first positioning groove 3021 is connected to the first positioning groove 3021 through a first clearance hole 3023. The first shaft 201 is rotatably installed in the first positioning groove 3021 through a first bearing 501 and a second bearing 502. The second shaft 204 is rotatably installed in the second positioning groove 3022 through a third bearing 503 and a fourth bearing 504. A portion of the intermediate gear 203 passes through the first clearance hole 3023 and meshes with the first shaft 201.

[0033] Furthermore, a first shoulder is provided on the first shaft 201, and a first bearing 501 is fitted onto the right end of the first shaft 201. The right end face of the outer ring of the first bearing 501 abuts against the inner wall of the first positioning groove 3021, and the left end of the inner ring of the first bearing 501 abuts against the gear portion on the first shaft 201. A second bearing 502 is fitted onto the left end of the first shaft 201, and a first shoulder is provided on the first shaft 201. An adjusting cover 303 is fixed to the left end of the transmission support 302. A first positioning part protrudes from the right end of the adjusting cover 303, extending into the first positioning groove 3021. The first positioning part abuts against the left end of the outer ring of the second bearing 502, and the right end of the inner ring of the second bearing 502 abuts against the left end of the first shoulder. In this way, the installation gap between the first bearing 501 and the second bearing 502 can be adjusted by adjusting the adjusting cover 303, reducing assembly difficulty and transmission error.

[0034] Furthermore, the transmission support 302 is provided with an assembly groove 3026 that penetrates the second positioning groove 3022. The second shaft 204 is inserted into the assembly groove 3026 from right to left and passes through the second positioning groove 3022. The third bearing 503 is located at the left end of the second shaft 204. The second shaft 204 is provided with a second shoulder. The third bearing 503 is located on the left side of the assembly groove 3026. The left end of the outer ring of the third bearing 503 abuts against the left end of the assembly groove 3026. The inner ring of the third bearing 503... The right end abuts against the left end of the second shoulder; the fourth bearing 504 is located at the right end of the second shaft 204, on which a third shoulder is provided. An end cover 304 is fixed on the transmission support 302, and a second positioning part protrudes from the left end of the end cover 304, extending into the assembly groove 3026. The fourth bearing 504 is located in the assembly groove 3026, with the left end of the inner ring of the fourth bearing 504 abutting against the right end of the third shoulder, and the right end of the outer ring of the fourth bearing 504 abutting against the second positioning part. Thus, the installation clearance between the third bearing 503 and the fourth bearing 504 is adjusted via the end cover 304.

[0035] In this embodiment, the drum includes a drum body 206, a first drum cover 208, and a second drum cover 209. The first drum cover 208 and the second drum cover 209 are sleeved on the transmission support 302. Both the first drum cover 208 and the second drum cover 209 are rotatably mounted on the transmission support 302. The drum body 206 is located between the first drum cover 208 and the second drum cover 209 and is fixedly connected. The first drum cover 208, the drum body 206, and the second drum cover 209 cooperate to form a cavity in the drum. This arrangement facilitates the assembly of the various components of the drum.

[0036] Furthermore, the first cylinder cover 208 has a protruding third connecting part, and the second cylinder cover 209 has a protruding fourth connecting part 2091. The third connecting part and the fourth connecting part 2091 are inserted into the cylinder body 206, supporting the cylinder body 206. The first cylinder cover 208 and the second cylinder cover 209 abut against both ends of the cylinder body 206 and are fixedly connected by bolts. This facilitates the positioning of each component.

[0037] Furthermore, the first cylinder cover 208 has a fifth connecting part protruding on it, which is located inside the third connecting part; the second cylinder cover 209 has a sixth connecting part 2092 protruding on it, which is located inside the fourth connecting part 2091; the first cylinder body 206 is engaged with the transmission support 302 through the first oil seal 508; the fifth connecting part is rotatably engaged with the transmission support 302 through the fifth bearing 507; the second cylinder cover 209 is rotatably engaged with the transmission support 302 through the sixth bearing 505; and the sixth connecting part 2092 is engaged with the transmission support 302 through the second oil seal 506.

[0038] In this embodiment, a second clearance hole 3011 is provided on the fixed bracket 301. The second clearance hole 3011 is located below the cylinder 206. The traction cable 207 is wound around the cylinder 206. One end of the traction cable 207 can extend out of the fixed bracket 301 through the second clearance hole 3011.

[0039] In this embodiment, the first positioning groove 3021 is provided at the left end of the transmission support 302, the right end of the first positioning groove 3021 is provided with a lubrication groove 3025, the right end of the transmission support 302 is provided with an oil hole 3024, the oil hole 3024 is connected to the lubrication groove 3025, and an oil level indicator 401 is fixed at the right end of the transmission support 302. The oil level indicator 401 can block the right end of the oil hole 3024 and display the amount of oil in the oil hole 3024.

[0040] Furthermore, a vent groove communicating with the oil hole 3024 is provided on the side of the transmission support 302, and a vent plug 402 is installed at the vent groove; the vent plug 402 is fixed to the transmission support 302 by an extension rod. This can prevent oil leakage while ensuring the balance of internal and external air pressure.

[0041] Furthermore, the drum is equipped with oil inlet / outlet plugs 403 for filling and discharging oil into the cavity; the oil inlet / outlet plugs 403 can control the amount of oil in the cavity inside the drum. Multiple oil inlet / outlet plugs 403 are evenly arranged on the drum body 206, thereby ensuring the convenience of adding and replacing lubricating oil.

[0042] In this embodiment, the left end of the fixed bracket 301 has a protruding mounting part, the motor 101 is located above the mounting part and is mounted on the mounting part by bolts; the output shaft of the motor 101 and the first shaft 201 are connected by a spline sleeve 202; the spline sleeve 202 extends into the inner hole of the adjusting cover 303, and the spline sleeve 202 and the inner hole of the adjusting cover 303 are engaged by a third oil seal.

[0043] In this embodiment, a first connecting portion 2061 protrudes from the inner wall of the cylinder 206, and a second connecting portion 2051 is provided on the outer wall of the internal gear ring 205. The first connecting portion 2061 is sleeved on the internal gear ring 205, and the inner circumferential surface of the first connecting portion 2061 abuts against the outer circumferential surface of the internal gear ring 205. The first connecting portion 2061 and the second connecting portion 2051 are fixedly connected. In this way, the internal gear ring 205 and the drum adopt a separate design, which facilitates the assembly or maintenance of the winch.

[0044] In this embodiment, the braking device includes a brake disc 210 and a caliper brake 102. The brake disc 210 is sleeved and fixed on the drum body 206, and the caliper brake 102 is mounted on the fixed bracket 301. The caliper brake 102 can clamp the brake disc 210, causing the drum to stop rotating. When the power is off, the brake closes and performs a braking function. The brake disc 210 and the drum body 206 are integrally set, which can prevent the failure of other transition connecting parts and ensure that the braking function is directly activated when the drum is braking, making it safer and more effective. Example

[0045] The difference from Embodiment 1 above lies in the connection method between the motor 101 and the fixed bracket 301; such as Figure 2 As shown, in this embodiment, the surface of the motor 101 housing facing the transmission support 302 is the flange surface 1011, and the bolt passes through the flange surface of the motor 101 and is fixedly connected to the fixed bracket 301.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A coaxial winding machine characterized by: The utility model relates to a winding device, including motor (101), reel, first shaft (201), second shaft (204), fixed support (301) and transmission support (302), transmission support (302) is fixed on fixed support (301), first shaft (201), second shaft (204) and reel are all rotationally installed on transmission support (302), first shaft (201) and second shaft (204) are transmission connection, second shaft (204) is transmission connection with reel, first shaft (201) and reel are coaxial arrangement, and the cavity is set up in reel, and transmission support (302) passes through the cavity of reel, and first shaft (201) and second shaft (204) are all set up in the cavity, and fixed support (301) between is provided with the brake device for carrying out the brake to reel, and motor (101) is installed on fixed support (301), and motor (101) is transmission connection with first shaft (201).

2. A coaxial winding machine according to claim 1, characterized in that: First shaft (201) and second shaft (204) are gear shafts, and an intermediate gear (203) is fixed on the second shaft (204), the intermediate gear (203) is engaged with the first shaft (201), and the second shaft (204) is engaged with an inner gear ring (205) fixed on the inner wall of the reel.

3. A coaxial winding machine according to claim 2, characterized in that: The outer teeth on the first shaft (201), the intermediate gear (203), the outer teeth of the second shaft (204) and the inner teeth of the inner gear ring (205) are all helical teeth.

4. A coaxial winding machine according to claim 2, characterized in that: The left end of the transmission support (302) is provided with a first positioning groove (3021), and the side surface of the transmission support (302) is provided with a second positioning groove (3022), the first positioning groove (3021) is connected with the first positioning groove (3021) through a first avoiding hole (3023), the first shaft (201) is rotationally installed in the first positioning groove (3021) through a first bearing (501) and a second bearing (502), the second shaft (204) is rotationally installed in the second positioning groove (3022) through a third bearing (503) and a fourth bearing (504), and part of the intermediate gear (203) is engaged with the first shaft (201) after passing through the first avoiding hole (3023).

5. A coaxial winding machine according to claim 4, characterized in that: The first positioning groove (3021) is arranged at the left end of the transmission support (302), the right end of the first positioning groove (3021) is provided with a lubricating groove (3025), the right end of the transmission support (302) is provided with an oil hole (3024), the oil hole (3024) is communicated with the lubricating groove (3025), the right end of the transmission support (302) is fixedly provided with an oil mark (401), and the oil mark (401) can block the right end of the oil hole (3024).

6. A coaxial winding machine according to claim 5, characterized in that: An air vent groove is arranged on the side surface of the transmission support (302) and communicated with the oil hole (3024), and an air vent plug (402) is arranged at the air vent groove; the air vent plug (402) is fixed on the transmission support (302) through an extension rod.

7. A coaxial winding machine according to claim 1, characterized in that: An oil inlet and outlet plug (403) is arranged on the reel and used for filling and discharging oil in the cavity.

8. A coaxial winding machine according to claim 1, characterized in that: The winding drum comprises a drum body (206), a first drum cover (208) and a second drum cover (209), the first drum cover (208) and the second drum cover (209) are sleeved on a transmission support (302), the first drum cover (208) and the second drum cover (209) are both rotationally installed on the transmission support (302), and the drum body (206) is located between the first drum cover (208) and the second drum cover (209) and is fixedly connected; the first drum cover (208), the drum body (206) and the second drum cover (209) cooperatively form a cavity of the winding drum.

9. A coaxial winding machine according to claim 1, characterized in that: A second avoiding hole (3011) is formed in the fixed support (301), the second avoiding hole (3011) is located below the winding drum, the traction cable (207) is wound on the winding drum, and one end of the traction cable (207) can extend out of the fixed support (301) through the second avoiding hole (3011).

10. A coaxial winding machine according to claim 1, characterized in that: The brake device comprises a brake disc (210) and a caliper brake (102), the brake disc (210) is sleeved and fixed on the winding drum, and the caliper brake (102) is installed on the fixed support (301); the caliper brake (102) can clamp the brake disc (210) to stop the rotation of the winding drum.

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