Sun gear lifting appliance

Abstract

The utility model relates to the technical field of lifting tools, in particular to a sun gear lifting appliance which comprises a first lifting appliance body, a second lifting appliance body, a connecting rod, an anti-falling plate and a lifting ring, each of the first lifting appliance body and the second lifting appliance body comprises an arc section and connecting bosses fixedly arranged on the two sides of the arc section, a connecting through hole is formed in the connecting boss of the first lifting appliance body and is in sliding connection with the connecting rod, and the end part of the connecting rod is fixedly connected with the second lifting appliance body; a connecting screw is fixedly installed on the anti-falling plate, a fastening screw is installed on the anti-falling plate in a sliding mode, the connecting screw penetrates through the anti-falling plate to be fixedly connected with the connecting boss of the second lifting appliance body, and the fastening screw penetrates through the anti-falling plate to be in threaded connection with the connecting boss on the first lifting appliance body; according to the scheme, the distance between the first lifting appliance body and the second lifting appliance body can be linearly adjusted through movement of the first lifting appliance body on the connecting rod, and the requirement for adaptation of numerous sun gears with different addendum circle diameters can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting tools, in particular to a sun gear hoist. Background Art

[0002] The sun gear is the driving gear in the planetary gear system, responsible for transmitting the torque power of the input shaft to the planetary gears, planet carriers and ring gears around the sun gear. Large sun gears are moved by hoisting in production. There are two conventional hoisting methods. One is to open threaded holes in the center of the two end faces of the sun gear, and then install lifting rings in the threaded holes for hoisting. The other hoisting method refers to the patented sun gear hoisting special hoisting plate (authorization announcement number: CN201713206U) and manufacture special hoisting equipment for hoisting.

[0003] Both of the above two hoisting methods have certain disadvantages. The first method opens a threaded hole on the sun gear, which will affect the strength of the sun gear itself. The special hoist used in the second method can only hoist sun gears of fixed specifications. The numerous special hoists are not conducive to lean management of the production site. The applicant has previously proposed a sun gear hoist including a limiting structure (authorization announcement number: CN220376093U). The limiting structure can be adjusted according to the diameter of the top circle of the sun gear to be suspended, and can be applied to sun gears of various specifications.

[0004] However, the above-mentioned limiting structure mainly adapts to sun gears of different specifications by setting limited limiting grooves and limiting strips detachably connected to the limiting grooves. Since the setting positions and setting numbers of the limiting grooves are fixed, the adjustment of the limiting structure is only to fixed points. In order to meet the adaptation needs of sun gears with many different tooth top circle diameters, designing a sun gear hanger with a wider adjustment range is a technical problem that needs to be solved urgently. Utility Model Content

[0005] The utility model provides a sun gear hoist, which can meet the adaptation needs of sun gears with many different tooth top circle diameters and better complete the hoisting and conveying tasks of the sun gear.

[0006] This application provides the following technical solutions:

[0007] A sun gear hanger comprises a first hanger body and a second hanger body which are symmetrically arranged, a connecting rod for connecting the first hanger body and the second hanger body, an anti-drop plate for fixing the distance between the first hanger body and the second hanger body, and a lifting ring fixedly installed on the first hanger body and the second hanger body; the first hanger body and the second hanger body both comprise an arc segment and a connecting boss fixedly arranged on both sides of the arc segment, a connecting through hole is arranged on the connecting boss of the first hanger body which is slidably connected to the connecting rod, and an end of the connecting rod is fixedly connected to the second hanger body; a connecting screw is fixedly installed on the anti-drop plate and a fastening screw is slidably installed, the connecting screw passes through the anti-drop plate and is fixedly connected to the connecting boss of the second hanger body, and the fastening screw passes through the anti-drop plate and is threadedly connected to the connecting boss on the first hanger body.

[0008] Beneficial effect: Compared with the sun gear hanger scheme including a limiting mechanism designed by the applicant before, this scheme, by setting a connecting rod to pass through the first hanger body and the second hanger body, and setting connecting bosses on both sides of the first hanger body to be slidably connected to the connecting rod, the spacing between the first hanger body and the second hanger body can be linearly adjusted by moving the first hanger body on the connecting rod. After tightening the fastening screws on the anti-drop plate, the encirclement formed by the arc segments on the first hanger body and the second hanger body and the connecting rod can more stably support the bottom of the top circle of the sun gear, solving the problem that the spacing between the first hanger body and the second hanger body can only be adjusted to a fixed value due to the fixed limiting groove in the limiting mechanism in the previous scheme, and can meet the adaptation needs of many sun gears with different top circle diameters. Fewer hangers are stored on the production site, which can better meet the lean management requirements of the production site.

[0009] Further, as an improvement, a lifting boss for mounting a lifting ring is fixedly provided at the maximum arc of the arc segment of the first sling body and the second sling body, and a lifting threaded hole is provided on the lifting boss to be threadedly connected to the lifting ring.

[0010] Beneficial effect: The function of the lifting boss is to install the lifting ring. It is set at the maximum arc on the arc segment to balance the weight on both sides of the first lifting device body and the second lifting device body to prevent the lifting device from shaking significantly during lifting and transportation.

[0011] Further, as an improvement, a waist-shaped hole is provided on the anti-drop plate, and the fastening screw passes through the waist-shaped hole and is threadedly connected to the connecting boss on the first sling body.

[0012] Beneficial effect: The waist-shaped hole is a long strip hole specially processed for adjusting the movement of the fastening screw in the waist-shaped hole, which is conducive to the linear adjustment of the distance between the first sling body and the second sling body.

[0013] Furthermore, as an improvement, the connecting rod adopts a two-stage stepped structure, including a limiting section, a smooth rod section, and a threaded section which are integrally formed and have gradually decreasing diameters.

[0014] Beneficial effect: The function of the limiting section is to limit the first sling body from detaching from the connecting rod. The specific solution is to set the connecting rod into a two-step step structure, wherein the first step refers to the step formed due to the diameter difference between the limiting section and the bare rod section. The first sling body cannot move anymore when it slides to the limiting section, wherein the second step refers to the step formed due to the diameter difference between the bare rod section and the threaded section. The function of the second step is to facilitate the threaded installation between the connecting rod and the second sling body. When the end face of one side of the bare rod section close to the threaded section is tightly fitted with the connecting boss on the second sling body, it is considered to be installed in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of a first embodiment of a sun gear hanger of the utility model;

[0016] Figure 2 For the corresponding Figure 1 Top view after removing the lifting ring and sun gear;

[0017] Figure 3 For the corresponding Figure 2 A top view when the distance between the first sling body and the second sling body is at its maximum. DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods:

[0019] The marks in the drawings in the specification include: a first sling body 1, an arc segment 11, a lifting boss 12, a lifting threaded hole 121, a connecting boss 13, a second sling body 2, a connecting rod 3, a limiting segment 31, a bare rod segment 32, a threaded segment 33, an anti-slip plate 4, a waist-shaped hole 41, a connecting screw 42, a fastening screw 43, a lifting ring 5, a sun gear 6, a gear end 61, a bare shaft segment 62, and a spline end 63.

[0020] Embodiment 1

[0021] Combination Figure 1-Figure 3 As shown, a sun gear hanger includes a first hanger body 1 and a second hanger body 2 which are symmetrically arranged, a connecting rod 3 for connecting the first hanger body 1 and the second hanger body 2, an anti-slip plate 4 for fixing the distance between the first hanger body 1 and the second hanger body 2, and a lifting ring 5 fixedly arranged on the first hanger body 1 and the second hanger body 2.

[0022] The first sling body 1 includes an arc segment 11, a lifting boss 12, and a connecting boss 13 that are fixedly connected. The arc segment 11 is in the shape of an arc as a whole. The lifting boss 12 is a linear element and one end of the lifting boss 12 is welded and fixed to the maximum arc on the arc segment 11, i.e., the middle position of the arc segment 11. A lifting threaded hole 121 is opened on the top of the lifting boss 12. The lifting threaded hole 121 is an internal threaded hole. The lifting ring 5 is threadedly connected to the lifting threaded hole 121. Two connecting bosses 13 are arranged and are respectively welded and fixed to the two sides of the arc segment 11. A connecting through hole is opened on each of the two connecting bosses 13. The two connecting through holes are distributed in a mirror-symmetrical manner with respect to the lifting boss 12 and the setting directions are both perpendicular to the lifting threaded hole 121.

[0023] The difference between the second sling body 2 and the first sling body 1 is that a connecting threaded hole is provided on the connecting boss 13 of the second sling body 2 , and the connecting threaded hole is an internal threaded hole. The other parts of the second sling body 2 have the same structure as the first sling body 1 .

[0024] Two connecting rods 3 are provided and are installed parallel to each other in the connecting through hole of the first hanger body 1 and the connecting threaded hole of the second hanger body 2. The connecting rod 3 as a whole has a two-level step-like structure. The connecting rod 3 includes an integrally formed limit section 31, a bare rod section 32, and a threaded section 33. The limit section 31 is provided at one end of the connecting rod 3 close to the first hanger body 1. The diameter of the limit section 31 is larger than the diameter of the bare rod section 32 to form a first-level step of the connecting rod 3. The function of the limit section 31 is to limit the first hanger body 1 from separating from the connecting rod 3. The end of the connecting rod 3 away from the limit piece is provided as a threaded section 33. The threaded section 33 is provided with an external thread. The nominal diameter of the threaded section 33 is smaller than the diameter of the bare rod section 32 to form a second-level step of the connecting rod 3.

[0025] The first sling body 1 and the second sling body 2 are connected into a whole through the connecting rod 3, the threaded section 33 is screwed into the connecting threaded hole of the second sling body 2, and the light rod section 32 passes through the through hole of the first sling body 1. By horizontally moving the first sling body 1 along the light rod section 32, the distance between the first sling body 1 and the second sling body 2 can be linearly adjusted. The distance between the first sling body 1 and the second sling body 2 refers to the distance between the connecting bosses 13 on the first sling body 1 and the second sling body 2.

[0026] The anti-drop plate 4 is provided with a mounting hole and a waist-shaped hole 41, both of which are through holes. A connecting screw 42 is installed in the mounting hole, and the connecting screw 42 is threadedly connected to the connecting boss 13 on the second sling body 2. A fastening screw 43 is installed in the waist-shaped groove, and the fastening screw 43 is threadedly connected to the connecting boss 13 on the first sling body 1. The fastening screw 43 can slide in the waist-shaped hole 41 to cooperate with the linear adjustment of the distance between the first sling body 1 and the second sling body 2.

[0027] The sun gear 6 mentioned in this embodiment is as follows Figure 1 As shown, it includes a gear end 61 , an optical axis segment 62 , and a spline end 63 that are integrally formed from top to bottom, and the above-mentioned tooth top circle refers to the outer circle of the gear end 61 .

[0028] The specific application process is as follows:

[0029] The initial state of the spreader is that the first spreader body 1 and the second spreader body 2 are as follows Figure 2 As shown, the connecting bosses 13 thereon are fitted together, that is, the distance between the first sling body 1 and the second sling body 2 is zero and the fastening screws 43 are in a tightened state. When it is officially used, it is necessary to first use the hook on the ordinary crane to hook the lifting ring 5 to adjust the entire sling off the ground and keep it suspended. Then the operator manually loosens the fastening screws 43 and pulls the first sling body 1 apart so that the distance between the first sling body 1 and the second sling body 2 is as shown. Figure 3 As shown, it reaches the maximum, and then tighten the fastening screw 43, and then control the crane so that the encirclement formed by the first hanger body 1, the second hanger body 2, and the connecting rod 3 passes through the tooth top circle and is inserted into the outer circle of the optical axis section 62, and then loosen the fastening screw 43 and push the first hanger body 1 so that the first hanger body 1 and the second hanger body 2 are both tightly attached to the outer circle of the optical axis section 62. At this time, the bottom of the gear end 61 on the sun gear 6 should be hung on the top of the first hanger body 1 and the second hanger body 2, and then tighten the fastening screw 43, and finally control the crane to slowly move upward to lift the sun gear 6.

[0030] Compared with the sun gear 6 hoist including a limiting mechanism designed by the applicant previously, this solution can linearly adjust the distance between the first hoist body 1 and the second hoist body 2 by moving the first hoist body 1 on the connecting rod 3, solving the problem that the distance between the first hoist body 1 and the second hoist body 2 can only be adjusted to a fixed value due to the fixed limiting groove in the limiting mechanism, and can meet the adaptation needs of sun gears 6 with many different tooth top circle diameters. Fewer hoists are stored at the production site, meeting the lean management requirements of the production site.

[0031] The above is only an embodiment of the utility model. The utility model is not limited to the field involved in this implementation case. The common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A sun gear hanger, characterized in that: The invention comprises a first sling body and a second sling body which are symmetrically arranged, a connecting rod for connecting the first sling body and the second sling body, an anti-drop plate for fixing the distance between the first sling body and the second sling body, and a lifting ring fixedly installed on the first sling body and the second sling body; The first sling body and the second sling body both include an arc segment and connecting bosses fixedly arranged on both sides of the arc segment, a connecting through hole is arranged on the connecting boss of the first sling body to be slidably connected to a connecting rod, and an end of the connecting rod is fixedly connected to the second sling body; A connecting screw is fixedly installed on the anti-drop plate and a fastening screw is slidably installed, the connecting screw passes through the anti-drop plate and is fixedly connected to the connecting boss of the second sling body, and the fastening screw passes through the anti-drop plate and is threadedly connected to the connecting boss on the first sling body.

2. A sun gear hanger according to claim 1, characterized in that: A lifting boss for mounting a lifting ring is fixedly provided at the maximum arc of the arc segments of the first lifting device body and the second lifting device body, and a lifting threaded hole is provided on the lifting boss to be threadedly connected with the lifting ring.

3. A sun gear hanger according to claim 2, characterized in that: A waist-shaped hole is arranged on the anti-drop plate, and the fastening screw passes through the waist-shaped hole and is threadedly connected with the connecting boss on the first sling body.

4. A sun gear hanger according to claim 3, characterized in that: The connecting rod adopts a two-stage stepped structure, including a limiting section, a polished rod section, and a threaded section which are integrally formed and have gradually decreasing diameters.

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