Gear box end cover and hoisting equipment

Abstract

The embodiment of the utility model provides a gear box end cover and hoisting equipment, and relates to the field of gear boxes, the gear box end cover comprises an end cover body, and the end cover body is provided with a plurality of fixing through holes and two hoisting threaded holes. The multiple fixing through holes are distributed in the circumferential direction of the end cover body at intervals, and the two hoisting threaded holes are distributed in the circumferential direction of the end cover body at intervals. Fixing bolts penetrate through the fixing through holes; the hoisting threaded hole is used for screwing a hoisting piece. The hoisting threaded hole is formed in the end cover body, the hoisting piece is connected in the hoisting threaded hole in a threaded mode, the hoisting piece is tightly matched with the hoisting threaded hole, the self-locking function is achieved, loosening is not prone to occurring, and hoisting safety is high.

Description

Technical Field

[0001] The utility model relates to the field of gear boxes, and in particular to a gear box end cover and hoisting equipment. Background Art

[0002] In the prior art, gearbox transmission shafting components are generally equipped with end caps, which are installed between the shafting and the housing to achieve a seal. These end caps are categorized by structural type as either blind or transparent. The transparent cap has a central hole, located at the end where the gear shaft protrudes. Blind caps are enclosed, sealing the through-holes in the gearbox housing. They do not have holes for the gear shaft to extend through. Both transparent and blind caps have through-holes for fastening bolts, which are screwed into threaded holes in the housing to secure the end caps to the housing.

[0003] The inventors discovered during their research that the prior art gearbox end cover has at least the following disadvantages when installed:

[0004] When installing the end cover and the housing, the cover must be lifted using a lifting device. During the lifting process, the latch is first inserted into the through-hole for the fastening bolt, and then connected to the latch using a cable. Because the latch needs to be removed later, the latch and the through-hole have a clearance fit, resulting in a large axial degree of freedom between the latch and the through-hole. This poses a risk of the latch coming loose during the lifting process, posing a safety hazard. Utility Model Content

[0005] The purpose of the present invention includes, for example, providing a gearbox end cover and a lifting device, which can improve the safety of end cover lifting and reduce the accident rate.

[0006] The embodiment of the present utility model can be implemented as follows:

[0007] In a first aspect, the utility model provides a gearbox end cover, comprising:

[0008] The end cover body is provided with a plurality of fixing through holes and two lifting threaded holes, the plurality of fixing through holes are arranged at intervals in the circumferential direction of the end cover body, and the two lifting threaded holes are arranged at intervals in the circumferential direction of the end cover body; the fixing through holes are used for passing fixing bolts; the lifting threaded holes are used for screwing lifting parts.

[0009] In an optional embodiment, an oil return groove is provided on the end cover body, and the two lifting threaded holes are equidistant from the oil return groove in the circumferential direction of the end cover body.

[0010] Based on the above solution, by setting the two lifting threaded holes to be symmetrically arranged relative to the oil return groove, when the end cover body is lifted using the two lifting threaded holes, the lifting threaded holes can ensure that the oil return groove is located directly below under the action of gravity, thereby aligning with the oil return holes on the box body, making it easier to fix the end cover body to the box body.

[0011] In an optional embodiment, a central angle corresponding to the arc between the lifting threaded hole and the oil return groove is greater than 90°.

[0012] Based on the above solution, the lifting threaded hole is located above the oil return groove. After lifting, the center of gravity of the end cover body is located above, it is not easy to tip over, and the lifting is stable and reliable.

[0013] In an optional embodiment, the end cover body has a dividing line passing through the center of its circle, the two lifting threaded holes are located on one side of the dividing line, and the oil return groove is located on the other side of the dividing line.

[0014] Based on the above solution, the lifting threaded hole is located above the oil return groove. After the lifting rope is connected to the two lifting threaded holes, the center of gravity of the end cover body is located above during the lifting process, and it is not easy to tip over, and the lifting is stable and reliable.

[0015] In an optional embodiment, the central angle corresponding to the arc between the two lifting threaded holes is 60°-120°.

[0016] Based on the above solution, by controlling the central angle between the two lifting threaded holes, the distance between the two lifting cables can be controlled, thereby performing lifting operations in a limited space and improving safety.

[0017] In an optional embodiment, the end cover body has an inner side surface and an outer side surface relative to each other, and the inner side surface is provided with an annular protrusion for snap-fitting with the box body; the lifting threaded hole passes through the inner side surface and the outer side surface.

[0018] Based on the above solution, the snap-fitting of the annular protrusion and the box body can improve the firmness and reliability of the connection between the end cover body and the box body.

[0019] In an optional embodiment, the end cover body includes a connected closing cover and a connecting ring, the closing cover closes one side of the connecting ring, and the other side of the connecting ring is used to dock with the box body; the fixing through hole and the lifting threaded hole both pass through the connecting ring and are located on the outside of the closing cover.

[0020] Based on the above solution, the end cover body is a blind cover, which can close the through hole on the box body and improve the dust and leakage prevention effect.

[0021] In an optional embodiment, the closing cover and the connecting ring are configured as an integral structure or are fixed by welding.

[0022] Based on the above scheme, the connection mode of the closure cover and the connecting ring is simple, flexible to select, and convenient to process and manufacture.

[0023] In a second aspect, the utility model provides a hoisting equipment, the hoisting equipment is used for hoisting the gear box end cover of any one of preceding embodiment, the hoisting equipment includes:

[0024] The hoisting device is connected with the two hoisting pieces, and the two hoisting pieces are respectively screwed into the two hoisting threaded holes of the end cover body.

[0025] In an optional embodiment, the hoisting piece includes a ring body and a screw rod, the ring body is connected with the screw rod, the ring body is connected with the hoisting device, and the screw rod is screwed into the hoisting threaded hole.

[0026] Based on the above scheme, the screw rod is screwed into the hoisting threaded hole, the ring body is connected with the dragline of the hoisting device, the connection between the ring body and the dragline is firm and not easy to loosen, and the hoisting process is safe and reliable.

[0027] The beneficial effects of the utility model embodiment include, for example:

[0028] In summary, the gear box end cover provided by the embodiment is characterized in that two hoisting threaded holes are formed in the end cover body, the hoisting piece can be screwed into the hoisting threaded hole, the hoisting piece and the hoisting threaded hole are closely matched and have a self-locking function, the position of the hoisting piece relative to the end cover body is firm and reliable and not easy to loosen, the dragline of the hoisting device is connected with the hoisting piece during hoisting, the end cover body is not easy to fall off when the end cover body is hoisted by the hoisting device, the hoisting process is safe and reliable, and the accident rate is low. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will briefly introduce the drawings needed to be used in the embodiment, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0030] Figure 1 It is a schematic view of the gear box end cover of the embodiment of the application;

[0031] Figure 2 It is a sectional view of the gear box end cover of the embodiment of the application;

[0032] Figure 3 It is a schematic view of the hoisting piece of the embodiment of the application;

[0033] Figure 4This is a schematic diagram of the hoisting of the gearbox end cover according to an embodiment of the present application.

[0034] icon:

[0035] 100-end cover body; 101-fixing through hole; 102-lifting threaded hole; 110-closing cover; 120-connecting ring; 130-annular protrusion; 140-oil return groove; 150-dividing line; 200-lifting piece; 210-ring body; 220-screw; 300-cable. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0039] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the invented product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0040] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0041] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0042] In the prior art, when the end cover of the gearbox is installed and matched with the housing, it is generally necessary to use a lifting rope to connect the end cover and lift the end cover to the set position. The end cover is provided with a through hole for passing a bolt, and the function of the bolt is to connect the end cover to the housing. In order to facilitate lifting, a pin is generally passed through the through hole first, and the lifting rope is connected to the pin. After lifting, the pin needs to be pulled out of the through hole. Therefore, the pin and the through hole are clearance-fitted, and the axial freedom of the pin and the through hole is not restricted. In this way, during the lifting process, the pin is easy to loosen axially, causing the end cover to fall off, posing a safety hazard. In particular, when the blind cover is lifted, since the blind cover is not sleeved on the outside of the shaft, the blind cover is only positioned by the lifting rope. When the lifting rope is detached from the blind cover, the blind cover falls directly, posing a high safety risk.

[0043] In view of this, the designer provides a gearbox end cover, which can improve the stability and reliability during end cover lifting and reduce the accident rate.

[0044] Please combine Figure 1 and Figure 2 In this embodiment, the gearbox end cover includes an end cover body 100, which is provided with a plurality of fixing through-holes 101 and two lifting threaded holes 102. The plurality of fixing through-holes 101 are arranged at intervals along the circumference of the end cover body 100, and the two lifting threaded holes 102 are arranged at intervals along the circumference of the end cover body 100. The fixing through-holes 101 are used to pass fixing bolts, and the lifting threaded holes 102 are used to thread the lifting parts 200.

[0045] As mentioned above, the hoisting method of the gearbox end cover provided in this embodiment is as follows:

[0046] Please combine Figure 4 , the two lifting parts 200 can be screwed into the two lifting threaded holes 102 respectively, and then, the two pull ropes of the lifting equipment are used to connect with the two lifting parts 200 respectively, and the end cover body 100 is lifted by the lifting equipment, and the end cover body 100 is lifted at a position adapted to the box body, and the bolts are passed through the fixing through holes 101 on the end cover body 100, and the bolts are fixedly connected with the threaded holes on the box body. By opening two lifting threaded holes 102 on the end cover body 100, the lifting parts 200 can be screwed into the lifting threaded holes 102, and the lifting parts 200 and the lifting threaded holes 102 fit tightly and have a self-locking function. The position of the lifting part 200 relative to the end cover body 100 is firm and reliable and not easy to loosen. During the lifting process, the pull rope 300 of the lifting device is connected to the lifting part 200. When the end cover body 100 is lifted by the lifting device, the end cover body 100 is not easy to fall, which is safe and reliable with a low accident rate.

[0047] The following embodiments illustrate the details of the gearbox end cover of the present application by way of examples.

[0048] Please combine Figure 1 and Figure 2In this embodiment, the gearbox end cover optionally includes an end cover body 100, which may be a blind cover. The end cover body 100 includes a connected sealing cover 110 and a connecting ring 120. The sealing cover 110 and the connecting ring 120 may be welded together. Alternatively, the sealing cover 110 and the connecting ring 120 may be configured as an integrated structure, which provides high structural strength and facilitates manufacturing.

[0049] Optionally, the closing cover 110 is configured as a circular shell, and the closing cover 110 has a circular groove.

[0050] Please combine Figure 1 and Figure 2 Optionally, the connecting ring 120 is generally annular in shape, with an inner diameter substantially equal to the diameter of the circular groove of the sealing cover 110. One side of the groove of the sealing cover 110 abuts against one side of the connecting ring 120, thereby sealing the sealing cover 110 at one end of the connecting ring 120. Furthermore, an annular protrusion 130 is provided on the side of the connecting ring 120 facing away from the sealing cover 110. The annular protrusion 130 is generally annular in shape. The annular protrusion 130, the connecting ring 120, and the sealing cover 110 are coaxially arranged. The protrusion 130 projects from the sealing cover 110 toward the connecting ring 120. The height of the protrusion 130 is designed as desired and is not specifically limited in this embodiment. Furthermore, an oil return groove 140 is provided on the annular protrusion 130. The bottom of the oil return groove 140 extends to the connecting ring 120, and the bottom of the oil return groove 140 is spaced apart from the sealing cover 110. The oil return groove 140 may be a rectangular groove, and the oil return groove 140 is symmetrically arranged with respect to an axis passing through the center of the connecting ring 120 .

[0051] For ease of description, the connecting ring 120 has opposing inner and outer sides, with the closure 110 located on the outer side. The connecting ring 120 is provided with a plurality of fixing holes 101 and two threaded lifting holes 102 that extend through both the inner and outer sides. The fixing holes 101 can be circular, with the axis of the fixing holes 101 parallel to the axis of the connecting ring 120. The fixing holes 101 are evenly spaced about the circumference of the connecting ring 120. For example, in this embodiment, the number of fixing holes 101 can be eight, and the eight fixing holes 101 can be evenly spaced.

[0052] Optionally, the connecting ring 120 has a dividing line 150 passing through its center, with the two lifting threaded holes 102 located on one side of the dividing line 150 and the oil return groove 140 located on the other side of the dividing line 150. In other words, the central angle corresponding to the arc between each lifting threaded hole 102 and the oil return groove 140 is greater than 90°. With this design, the two lifting threaded holes 102 are located above the oil return groove 140. When the end cover body 100 is lifted using lifting equipment, the center of gravity of the end cover body 100 is located at the top, making it less likely to tip over and ensuring stable and reliable lifting.

[0053] Furthermore, the two lifting threaded holes 102 are equidistant from the oil return groove 140 in the circumferential direction of the connecting ring 120, that is, the two lifting threaded holes 102 are arranged symmetrically relative to the axis of symmetry of the oil return groove 140. When the end cover body 100 is lifted using the two lifting threaded holes 102, the lifting threaded holes 102 can ensure that the oil return groove 140 is located directly below under the action of gravity, thereby aligning with the oil return holes on the box body, thereby facilitating fixed connection between the end cover body 100 and the box body.

[0054] Optionally, the central angle of the arc between the two lifting threaded holes 102 is 60°-120°. For example, the central angle of the arc between the two lifting threaded holes 102 is 60°, 90° or 120°, etc. It can be designed as needed to adapt to lifting in different scenarios.

[0055] It should be noted that the lifting threaded hole 102 can be set to a threaded hole with a diameter of 16-20 mm. The diameter of the lifting threaded hole 102 can be set as needed, and can be threadedly matched with the lifting part 200 without affecting the structural strength of the end cover body 100.

[0056] The gearbox end cover provided in this embodiment is provided with two lifting threaded holes 102 on the end cover body 100. The lifting threaded holes 102 cooperate with the lifting parts 200. The lifting parts 200 do not occupy the position of the fixing through holes 101 of the bolts connected to the housing on the end cover body 100, which facilitates the fixed connection of the end cover body 100 with the housing after lifting. In addition, the lifting parts 200 and the lifting threaded holes 102 cooperate tightly and have a self-locking function. The position of the lifting parts 200 relative to the end cover body 100 is firm and reliable and is not easy to loosen. During the lifting process, the cable 300 of the lifting device is connected to the lifting parts 200. When the end cover body 100 is lifted by the lifting device, the end cover body 100 is not easy to fall off, which is safe and reliable with a low accident rate.

[0057] It should be understood that after the end cover body 100 is hoisted to the set position, the end cover body 100 can be fixed to the box body by bolts, and after the bolts are screwed to a certain depth with the box body, the hoisting part 200 can be directly rotated and separated from the end cover body 100. The hoisting part 200 will not interfere with the box body and will not easily affect the installation of the end cover body 100 on the box body.

[0058] Please combine Figure 3 and Figure 4 This embodiment also provides a lifting device, which is used to lift the gear box end cover of any of the aforementioned embodiments. The lifting device includes a lifting device (not shown) and two lifting parts 200. The lifting device is connected to the two lifting parts 200, and the two lifting parts 200 are respectively screwed together with the two lifting threaded holes 102 of the end cover body 100.

[0059] Please combine Figure 3 Optionally, the hoisting member 200 may include a ring body 210 and a screw rod 220, wherein the ring body 210 is rotatably connected to the screw rod 220, and the rotation axis of the ring body 210 and the screw rod 220 is perpendicular to the axis of the screw rod 220 itself. The ring body 210 can be rotated and folded relative to the screw rod 220. When stored or transported, the folded hoisting member 200 is small in size and occupies little space, which can reduce storage and transportation costs. When in use, the ring body 210 is connected to the lifting device, and the screw rod 220 is screwed to the lifting threaded hole 102. During the lifting process, the ring body 210 can be rotated upward until the axis of the ring body 210 is parallel to the axis of the screw rod 220, and the ring body 210 and the screw rod 220 are in a stable state and are not easy to shake during lifting.

[0060] Optionally, the lifting device may include a crane and a cable 300 , wherein one end of the cable 300 is connected to the crane, and the other end is connected to the ring body 210 .

[0061] The hoisting equipment provided in this embodiment has convenient and reliable hoisting operations and high safety.

[0062] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A gearbox end cover, characterized in that: include: An end cover body (100) is provided with a plurality of fixing through holes (101) and two hanging threaded holes (102), wherein the plurality of fixing through holes (101) are arranged at intervals in the circumferential direction of the end cover body (100), and the two hanging threaded holes (102) are arranged at intervals in the circumferential direction of the end cover body (100); the fixing through holes (101) are used for passing fixing bolts; and the hanging threaded holes (102) are used for screwing hanging parts (200).

2. The gearbox end cover according to claim 1, characterized in that: An oil return groove (140) is provided on the end cover body (100), and the distances between the two hanging threaded holes (102) and the oil return groove (140) in the circumferential direction of the end cover body (100) are equal.

3. The gearbox end cover according to claim 2, characterized in that: The central angle of the arc between the hanging threaded hole (102) and the oil return groove (140) is greater than 90°.

4. The gearbox end cover according to claim 2, characterized in that: The end cover body (100) has a dividing line (150) passing through the center of the circle, the two hanging threaded holes (102) are located on one side of the dividing line (150), and the oil return groove (140) is located on the other side of the dividing line (150).

5. The gearbox end cover according to claim 4, characterized in that: The central angle of the arc corresponding to the two lifting threaded holes (102) is 60°-120°.

6. The gearbox end cover according to any one of claims 1 to 5, characterized in that: The end cover body (100) has an inner side surface and an outer side surface opposite to each other, and the inner side surface is provided with an annular protrusion (130) for engaging with the box body; the hanging threaded hole (102) passes through the inner side surface and the outer side surface.

7. The gearbox end cover according to any one of claims 1 to 5, characterized in that: The end cover body (100) comprises a connected closing cover (110) and a connecting ring (120), wherein the closing cover (110) closes one side of the connecting ring (120), and the other side of the connecting ring (120) is used for docking with the box body; the fixing through hole (101) and the lifting threaded hole (102) both pass through the connecting ring (120) and are located outside the closing cover (110).

8. The gearbox end cover according to claim 7, characterized in that: The closing cover (110) and the connecting ring (120) are provided as an integral structure or are fixed by welding.

9. A lifting device, characterized in that: The hoisting equipment is used to hoist the gearbox end cover according to any one of claims 1 to 8, and the hoisting equipment includes: A lifting device and two lifting parts (200), wherein the lifting device is connected to the two lifting parts (200), and the two lifting parts (200) are respectively screwed and matched with the two lifting threaded holes (102) of the end cover body (100).

10. The hoisting equipment according to claim 9, characterized in that: The hoisting member (200) comprises a ring body (210) and a screw rod (220), wherein the ring body (210) is connected to the screw rod (220), the ring body (210) is connected to the hoisting device, and the screw rod (220) is screwed to the hoisting threaded hole (102).

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