3-ton loop chain hydraulic hoist

Abstract

The utility model discloses a 3-ton loop chain hydraulic hoist which comprises a machine base, a motor assembly, a brake assembly, a valve block assembly and a speed reducer assembly are arranged on the machine base, a brake shaft is connected to the machine base in a rotating mode, a driving chain wheel shaft is arranged on the brake shaft, and a driven chain wheel shaft is connected to the machine base in a rotating mode. The output end of the brake assembly is in transmission connection with one end of the brake shaft, the output end of the motor assembly is in transmission connection with an input gear, the input gear is meshed with a transmission gear, and the transmission gear is arranged on the brake shaft; the speed reducer assembly comprises a first shaft, a second shaft and a middle shaft which are rotationally connected to the machine base, a third-stage large gear and a first-stage small gear are arranged on the brake shaft, a first-stage large gear meshed with the first-stage small gear is arranged on the first shaft, a second-stage small gear is further arranged on the first shaft, and a second-stage large gear meshed with the second-stage small gear is arranged on the second shaft. The loop chain hydraulic hoist has the advantages of being small in size, light in weight, safe and reliable to use, complete in overall function and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, and more specifically, it relates to a 3-ton chain hoist. Background Art

[0002] The hoist is an important component in lifting equipment. Existing hoists include manual hoists, electric hoists, pneumatic hoists, and hydraulic hoists. For hydraulic hoists, traditional hydraulic hoists are driven by emulsion motors, with a small rated load, a large volume, heavy weight, and a relatively complex structure of the lifting machinery, which cannot meet the current situation. Moreover, there is no braking device, so safety cannot be guaranteed and the overall effect is not good. Accordingly, the utility model proposes a 3-ton chain hoist. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art and provide a 3-ton chain hoist, which has the characteristics of small volume, light weight, and safe and reliable use.

[0004] To solve the above technical problems, the purpose of the utility model is realized as follows: A 3-ton chain hoist according to the utility model includes a machine base, on which a motor assembly, a brake assembly, a valve block assembly, and a reducer assembly are provided. A brake shaft is rotatably connected to the machine base, and a driving sprocket shaft that acts as a follower is provided on the brake shaft. A driven sprocket shaft parallel to the driving sprocket shaft is rotatably connected to the machine base. The output end of the brake assembly is drivingly connected to one end of the brake shaft. The output end of the motor assembly is drivingly connected to an input gear, and a transmission gear is engaged with the input gear. The transmission gear is provided on the brake shaft.

[0005] The reducer assembly includes a first shaft, a second shaft, and an intermediate shaft rotatably connected to the machine base. A three-stage large gear and a first-stage small gear are provided on the brake shaft. A first-stage large gear engaged with the first-stage small gear is provided on the first shaft. A second-stage small gear is also provided on the first shaft. A second-stage large gear engaged with the second-stage small gear is provided on the second shaft. A third-stage small gear engaged with the three-stage large gear is also provided on the second shaft. A driven gear is provided on the driven sprocket shaft, and an intermediate gear provided on the intermediate shaft is arranged between the driven gear and the third-stage small gear. The intermediate gear is engaged with both the driven gear and the third-stage small gear.

[0006] The utility model is further arranged as: Chain guides are provided on the machine base outside both the driving sprocket shaft and the driven sprocket shaft.

[0007] The utility model is further arranged as: The motor assembly and the brake assembly are provided on the same side of the machine base.

[0008] The utility model is further configured such that: the speed reducer assembly is arranged on one side of the machine base, and the motor assembly or the brake assembly is arranged on the other side of the machine base.

[0009] The utility model is further configured such that: the motor assembly is a cycloidal motor assembly.

[0010] In summary, the utility model has the following beneficial effects: the 3-ton chain hoist involved in the utility model is composed of a cycloidal motor, a brake assembly, a valve block assembly and a speed reducer assembly, so that the chain hoist has the advantages of small mechanical volume, light weight, simple installation, high safety, low noise and long service life, with perfect overall functions and strong practicability. Description of the Drawings

[0011] Figure 1 is the front view structural schematic diagram of the utility model;

[0012] Figure 2 is the side view structural schematic diagram of the utility model;

[0013] Figure 3 is Figure 1 the sectional view taken along A-A in Detailed Embodiments

[0014] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the preferred implementation schemes of the present utility model will be described below in conjunction with specific embodiments. However, it should be understood that these descriptions are only for further explaining the features and advantages of the present utility model, rather than limiting the patent requirements of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0015] The present utility model will be further described below in conjunction with the drawings and preferred embodiments.

[0016] Embodiment 1

[0017] Referring to Figures 1 to 3 as shown, a 3-ton chain hoist involved in this embodiment includes a machine base 1. A motor assembly 2, a brake assembly 3, a valve block assembly 4 and a speed reducer assembly 100 are arranged on the machine base 1. A brake shaft 5 is rotatably connected to the machine base 1. A driving sprocket shaft 6 that follows is arranged on the brake shaft 5. A driven sprocket shaft 7 parallel to the driving sprocket shaft 6 is rotatably connected to the machine base 1. The output end of the brake assembly 3 is drivingly connected to one end of the brake shaft 5. The output end of the motor assembly 2 is drivingly connected to an input gear 8. A transmission gear 9 is engaged with the input gear 8. The transmission gear 9 is arranged on the brake shaft 5;

[0018] The speed reducer assembly 100 includes a first shaft 10, a second shaft 11, and an intermediate shaft 12 rotatably connected to the machine base 1. A three-stage large gear 13 and a first-stage small gear 14 are provided on the brake shaft 5. A first-stage large gear 15 meshing with the first-stage small gear 14 is provided on the first shaft 10. A second-stage small gear 16 is further provided on the first shaft 10. A second-stage large gear 17 meshing with the second-stage small gear 16 is provided on the second shaft 11. A third-stage small gear 18 meshing with the three-stage large gear 13 is further provided on the second shaft 11. A driven gear 19 is provided on the driven sprocket shaft 7. An intermediate gear 20 provided on the intermediate shaft is arranged between the driven gear 19 and the third-stage small gear 18, and the intermediate gear 20 meshes with both the driven gear 19 and the third-stage small gear 18.

[0019] Furthermore, chain guides 21 are provided on the machine base outside both the driving sprocket shaft 6 and the driven sprocket shaft 7.

[0020] Furthermore, the motor assembly 2 is a cycloidal motor assembly.

[0021] In this embodiment, the rated load of this ring chain hydraulic hoist is: 2 * 1.5T, the motor displacement is: 32 ml / r, the rated flow rate is: 50 L / min, the lifting speed is: 5 m / min, the working pressure is: 85 bar, and the total transmission ratio is: 57.6. It consists of four major modules: a cycloidal motor, a brake assembly, a valve block assembly, and a speed reducer assembly. The brake thereon includes a rear cover, a tailstock, a handle shaft, a shaft retaining ring, a brake seat, a brake wheel, a hole retaining ring, a static friction plate, a piston, a flange plate, a dynamic friction plate, and a disc spring; the speed reducer thereon includes an input gear, a transmission gear, an upper cover, a lower cover, a machine base, a chain guide, a plug board, a sprocket shaft, a three-stage large gear, a brake shaft, a first-stage small gear, a first-stage large gear, a second-stage small gear, a reduction body, a second-stage large gear, a third-stage small gear, an intermediate gear, and a reduction cover; the hydraulic motor thereon is a Danfoss cycloidal motor.

[0022] The structure of the present invention is simple and reasonably designed. It uses a hydraulic motor to drive the speed reducer, installs a brake between the hydraulic motor and the speed reducer, and performs safety braking at the high-speed end of the hydraulic motor, having the advantages of small volume, light weight, relatively simple installation structure, higher safety, low noise, and long service life.

[0023] Embodiment 2

[0024] See Figures 1 to 3 As shown, for a 3-ton ring chain hydraulic hoist involved in this embodiment, on the basis of Embodiment 1, it is further arranged that the motor assembly 2 and the brake assembly 3 are arranged on the same side of the machine base 1.

[0025] Furthermore, the speed reducer assembly 100 is arranged on one side of the machine base 1, and the motor assembly 2 or the brake assembly 3 is arranged on the other side of the machine base 1.

[0026] The 3-ton chain hoist involved in the present utility model is composed of a cycloid motor, a brake assembly, a valve block assembly and a reducer assembly, making the chain hoist have the advantages of small mechanical volume, light weight, simple installation, high safety, low noise and long service life. The overall function is perfect and the practicability is strong.

[0027] Unless otherwise specifically stated, in the present utility model, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicating the orientation or positional relationship, it is based on the actual orientation or positional relationship shown. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present utility model are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood in combination with the embodiments and according to the specific circumstances.

[0028] Unless otherwise clearly specified and defined, in the present utility model, if there are terms such as "set", "connected" and "connected", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0029] The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present utility model without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present utility model through logical analysis, reasoning or limited experiments based on the concept of the present utility model on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A 3-ton chain hydraulic hoist, comprising a machine base, on which a motor assembly, a brake assembly, a valve block assembly and a reducer assembly are arranged, characterized in that: The machine base is rotatably connected with a brake shaft, the brake shaft is provided with a driving sprocket shaft for following, the machine base is rotatably connected with a driven sprocket shaft parallel to the driving sprocket shaft, the output end of the brake assembly is transmission-connected with one end of the brake shaft, the output end of the motor assembly is transmission-connected with an input gear, the input gear is meshed with a transmission gear, and the transmission gear is provided on the brake shaft; The reducer assembly includes a first shaft, a second shaft and an intermediate shaft rotatably connected to the machine base, a three-stage large gear and a first-stage small gear are provided on the brake shaft, a first-stage large gear meshing with the first-stage small gear is provided on the first shaft, a second-stage small gear is also provided on the first shaft, a second-stage large gear meshing with the second-stage small gear is provided on the second shaft, and a third-stage small gear meshing with the third-stage large gear is also provided on the second shaft, a driven gear is provided on the driven sprocket shaft, an intermediate gear arranged on the intermediate shaft is provided between the driven gear and the third-stage small gear, and the intermediate gear is meshed with the driven gear and the third-stage small gear.

2. The 3-ton chain hydraulic hoist according to claim 1 is characterized in that: The driving sprocket shaft and the driven sprocket shaft are both provided with chain guides arranged on the machine base.

3. The 3-ton chain hydraulic hoist according to claim 1 or 2, characterized in that: The motor assembly and the brake assembly are arranged on the same side of the machine base.

4. The 3-ton chain hydraulic hoist according to claim 3 is characterized in that: The reducer assembly is arranged on one side of the machine base, and the motor assembly or the brake assembly is arranged on the other side of the machine base.

5. The 3-ton chain hydraulic hoist according to claim 1 is characterized in that: The motor assembly is a gerotor motor assembly.

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