Hobbing cutter anti-falling type lifting appliance

Abstract

The utility model relates to the technical field of hobbing cutter lifting appliances, and discloses a hobbing cutter anti-drop lifting appliance which comprises a lifting appliance main body, a folding arm, a pin shaft, a pull rod, a sleeve, a handle, a spring, an inner clamping ring and a check ring, the lifting appliance body comprises a front cylinder, a rear cylinder and a containing groove, the rear end of the front cylinder is fixedly connected with the front end of the rear cylinder, the diameter of the rear cylinder is larger than that of the front cylinder, a containing hole is formed in the center of the rear cylinder, and the containing groove is formed in the front end of the front cylinder; the folding arm is rotatably mounted in the accommodating groove through a pin shaft; the front portion of the sleeve is arranged in the containing hole, the check ring is arranged in the containing hole, and the two ends of the check ring are fixedly arranged on the outer side of the pull rod in a sleeving mode through the two inner clamping rings. The front portion of the pull rod is located in the front cylinder, the middle portion of the pull rod is located in the sleeve, and the rear portion of the pull rod is fixed to the front end of the handle. A plurality of hobbing cutters can be hoisted side by side at a time, hoisting efficiency is improved, collision bending of the hobbing cutters is avoided, and the hobbing cutters are prevented from loosening during hoisting shaking.

Description

Technical Field

[0001] The utility model relates to the technical field of gear hobbing cutter slings, in particular to an anti-dropping type sling for gear hobbing cutters. Background Art

[0002] Gear hobbing is one of the commonly used processing methods in gear processing. It has the advantages of fast processing speed, less tool wear, and high consistency of each tooth. Usually, a rotating gear hobbing cutter cuts a rotating workpiece and gradually processes the tooth shape by the gear hobbing cutter.

[0003] Gear hobbing cutters need to be transported during production and processing, which is currently mainly done manually with a ground cart, such as the Chinese utility model patent application number CN201120428265.3, entitled A cart for transporting gear hobbing cutters, which can effectively transport gear hobbing cutters. However, this transportation method cannot utilize the lifting equipment in the factory, which limits its transportation efficiency and is prone to collision and bending of the gear hobbing cutter, affecting gear processing. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a gear hobbing cutter anti-slip hanger that is different from the existing structure, which can lift multiple gear hobbing cutters side by side at one time, improve the lifting efficiency, avoid collision and bending of the gear hobbing cutters, and prevent the gear hobbing cutters from loosening during lifting and shaking.

[0005] The utility model is implemented by the following technical scheme: a gear hobbing cutter anti-slip type sling, comprising a sling body, a folding arm, a pin shaft, a pull rod, a sleeve, a handle, a spring, an inner clamping ring and a retaining ring; the sling body comprises a front cylinder, a rear cylinder and a receiving groove, the rear end of the front cylinder is fixedly connected to the front end of the rear cylinder, the diameter of the rear cylinder is larger than the diameter of the front cylinder, a receiving hole is centrally arranged in the rear cylinder, and the receiving groove is arranged at the front end of the front cylinder; the folding arm is rotatably mounted in the receiving groove through a pin shaft; the front part of the sleeve is arranged in the receiving hole, the retaining ring is arranged in the receiving hole, and the two ends of the retaining ring are fixed to the outside of the pull rod by two inner clamping rings; the front part of the pull rod is located in the front cylinder, the middle part of the pull rod is located in the sleeve, and the rear part of the pull rod is fixed to the front end of the handle; the spring is sleeved on the outside of the pull rod, the front end of the spring contacts the rear side of the retaining ring, and the rear end of the spring contacts the front end of the handle.

[0006] Furthermore, the folding arm includes a cylindrical portion and an arc portion fixed at the bottom end of the cylindrical portion, a through hole is horizontally arranged at the center of the cylindrical portion, and the pin shaft is fixed in the through hole.

[0007] Furthermore, a third threaded hole is vertically arranged at the lower part of the arc part and the center of the cylindrical part, and the third threaded hole extends to the bottom of the horizontal through hole in the center of the cylindrical part. A fastening screw is installed in the third threaded hole through threaded cooperation to fix the pin shaft in the horizontal through hole in the center of the cylindrical part.

[0008] Furthermore, a first threaded hole is horizontally arranged in the center of the front end of the handle, and the rear part of the pull rod is fixed in the first threaded hole by threaded fitting. A second threaded hole is arranged in the center of the bottom end of the handle below the threaded hole, and the flat-end slotted set screw is installed in the second threaded hole by threaded fitting to press and fix the rear part of the pull rod.

[0009] Furthermore, two flat grooves are symmetrically arranged on both sides of the front portion of the rear cylinder.

[0010] Compared with the prior art, the beneficial effect of the utility model is that a gear hoist anti-slip type hoist of the utility model can adjust the level and bending of the folding arm by pulling the handle and utilizing the elastic force of the pull rod and the spring, and the gear hoist is set on the front cylinder. The folding arm and the rear cylinder can prevent the gear hoist from loosening during hoisting and shaking, so that multiple gear hoists can be hoisted at one time, thereby improving the hoisting efficiency and avoiding the collision and bending of the gear hoist, which affects the gear processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the front view of the utility model;

[0012] Figure 2 yes Figure 1 AA section view;

[0013] Figure 3 It is a left view of the utility model;

[0014] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model after removing the main body of the sling;

[0015] Figure 5 It is a three-dimensional structural schematic diagram of the main body of the sling in the utility model.

[0016] In the figure: the sling body 1; the folding arm 2; the pin 3; the flat-end slotted set screw 4; the pull rod 5; the sleeve 6; the handle 7; the spring 8; the inner clamping ring 9; the retaining ring 10; the front cylinder 11; the rear cylinder 12; the receiving groove 13; the cylindrical part 21; the arc part 22; the receiving hole 121; the flat groove 122. DETAILED DESCRIPTION

[0017] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0018] The utility model aims to provide a gear hobbing cutter anti-dropping type sling in view of the defects of the prior art.

[0019] Embodiment 1

[0020] This embodiment provides a gear hobbing cutter anti-drop type sling, referring to Figure 1-Figure 5 As shown, it includes a sling body 1, a folding arm 2, a pin 3, a pull rod 5, a sleeve 6, a handle 7, a spring 8, an inner clamping ring 9 and a retaining ring 10; the sling body 1 includes a front cylinder 11, a rear cylinder 12 and a receiving groove 13, the rear end of the front cylinder 11 is fixedly connected to the front end of the rear cylinder 12, the diameter of the rear cylinder 12 is larger than the diameter of the front cylinder 11, and a receiving hole 121 is provided in the center of the rear cylinder 12, and the receiving groove 13 is provided at the front end of the front cylinder 11; the folding arm 2 can rotate through the pin 3 is installed in the accommodating groove 13; the front part of the sleeve 6 is arranged in the accommodating hole 121, the retaining ring 10 is arranged in the accommodating hole 121, and the two ends of the retaining ring 10 are fixed to the outside of the pull rod 5 through two inner clamping rings 9; the front part of the pull rod 5 is located in the front cylinder 11, the middle part of the pull rod 5 is located in the sleeve 6, and the rear part of the pull rod 5 is fixed to the front end of the handle 7; the spring 8 is sleeved on the outside of the pull rod 5, the front end of the spring 8 contacts with the rear side of the retaining ring 10, and the rear end of the spring 8 contacts with the front end of the handle 7.

[0021] Specifically, refer to Figure 4 As shown, the folding arm 2 includes a cylindrical portion 21 and an arc portion 22 fixed at the bottom end of the cylindrical portion 21. A through hole is horizontally arranged at the center of the cylindrical portion 21, and the pin shaft 3 is fixed in the through hole.

[0022] Specifically, refer to Figure 2-Figure 5 As shown, a third threaded hole is vertically arranged at the lower part of the arc portion 22 and the center of the cylindrical portion 21, and the third threaded hole extends to the bottom of the horizontal through hole in the center of the cylindrical portion 21. A fastening screw is installed in the third threaded hole through threaded cooperation to fix the pin shaft 3 in the horizontal through hole in the center of the cylindrical portion 21.

[0023] Specifically, refer to Figure 1-Figure 5As shown, a first threaded hole is horizontally arranged at the center of the front end of the handle 7, and the rear part of the pull rod 5 is fixed in the first threaded hole by threaded fit. A second threaded hole is arranged at the center of the bottom end of the handle 7 below the threaded hole, and a flat-end slotted set screw 4 is installed in the second threaded hole by threaded fit to press and fix the rear part of the pull rod 5. Figure 5 As shown, two flat grooves 122 are symmetrically arranged on both sides of the front of the rear cylinder 12 to increase the clamping contact area.

[0024] The present embodiment provides an anti-slip type hoist for a gear hoist. When in use, the flat grooves on both sides of the rear cylinder 12 are fixed by a hoisting rope or a clamp, and then the handle 7 is pulled rearward, the pull rod 5 will resist the elastic force of the spring 8 and slide rearward, so that the side surface of its front end is about 2-3 mm away from the side surface of the arc portion 22 of the folding arm 2; the folding arm 2 is adjusted so that its axis is in line with the axis of the hoist body 1, and the outer diameter of the folding arm 2 is the same as the outer diameter of the front cylinder 11, and the handle 7 is released so that the front end of the pull rod 5 is against the middle section of the arc of the folding arm 2; the folding arm 2 and the front cylinder 11 are completely passed through the inner hole of the gear hoist. Move the folding arm 2 so that its axis is 90 degrees with the axis of the sling body 1. At this time, the pull rod 5 will move forward under the action of the spring 8, and finally the front end of the pull rod 5 will be close to the side of the arc portion 22. The front end of the front cylinder 11 is fixed by a lifting rope or a clamp, and the gear hobbing cutter is set on the front cylinder 11. The large diameter of the folding arm 2 and the rear cylinder 12 can prevent the gear hobbing cutter from loosening when it is shaken during lifting. This method can lift multiple gear hobbing cutters side by side at one time, improve the lifting efficiency, and avoid the collision and bending of the gear hobbing cutter, which affects the gear processing.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A gear hobbing cutter anti-drop type sling, characterized by: The invention comprises a sling body (1), a folding arm (2), a pin (3), a pull rod (5), a sleeve (6), a handle (7), a spring (8), an inner clamping ring (9) and a retaining ring (10); the sling body (1) comprises a front cylinder (11), a rear cylinder (12) and a receiving groove (13); the rear end of the front cylinder (11) is fixedly connected to the front end of the rear cylinder (12); the diameter of the rear cylinder (12) is larger than the diameter of the front cylinder (11); a receiving hole (121) is arranged at the center of the rear cylinder (12); and the receiving groove (13) is arranged at the front end of the front cylinder (11); the folding arm (2) is connected to the rear cylinder (12) by the pin (3); The pull rod (5) is rotatably mounted in the receiving groove (13); the front portion of the sleeve (6) is arranged in the receiving hole (121), the retaining ring (10) is arranged in the receiving hole (121), and the two ends of the retaining ring (10) are fixed to the outside of the pull rod (5) through two inner clamping rings (9); the front portion of the pull rod (5) is located in the front cylinder (11), the middle portion of the pull rod (5) is located in the sleeve (6), and the rear portion of the pull rod (5) is fixed to the front end of the handle (7); the spring (8) is sleeved on the outside of the pull rod (5), the front end of the spring (8) contacts the rear side of the retaining ring (10), and the rear end of the spring (8) contacts the front end of the handle (7).

2. The gear hobbing cutter anti-dropping hanger according to claim 1, characterized in that: The folding arm (2) comprises a cylindrical portion (21) and an arc portion (22) fixed at the bottom end of the cylindrical portion (21); a through hole is horizontally arranged at the center of the cylindrical portion (21), and the pin shaft (3) is fixed in the through hole.

3. The gear hobbing cutter anti-dropping hanger according to claim 2, characterized in that: A third threaded hole is vertically arranged at the lower part of the arc portion (22) and the center of the cylindrical portion (21), and the third threaded hole extends below the horizontal through hole in the center of the cylindrical portion (21). A fastening screw is installed in the third threaded hole through threaded matching to fix the pin shaft (3) in the horizontal through hole in the center of the cylindrical portion (21).

4. The gear hobbing cutter anti-dropping hanger according to claim 1, characterized in that: A first threaded hole is horizontally arranged in the center of the front end of the handle (7), and the rear part of the pull rod (5) is fixed in the first threaded hole by threaded engagement. A second threaded hole is arranged in the center of the bottom end of the handle (7) below the threaded hole, and a flat-end slotted set screw (4) is installed in the second threaded hole by threaded engagement to press and fix the rear part of the pull rod (5).

5. The gear hobbing cutter anti-dropping hanger according to claim 1, characterized in that: Two flat grooves (122) are symmetrically arranged on both sides of the front portion of the rear cylinder (12).

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