Connecting structure of upper beam and diversion sheave assembly

Abstract

The utility model discloses a connecting structure of an upper beam and a diversion sheave assembly, which comprises the upper beam and the diversion sheave assembly, and the upper beam comprises two first C-shaped metal plates which are oppositely arranged; the diversion sheave assembly comprises a hanging beam and two diversion sheaves, the hanging beam comprises two second C-shaped metal plates which are oppositely arranged, the hanging beam is arranged at the bottom of the upper beam, the hanging beam and the upper beam are arranged in a crossed mode, and the diversion sheaves are arranged between the two second C-shaped metal plates. The upper beam is arranged above the hanging beam, the hanging beam has a supporting effect on the upper beam, the hanging beam can transmit loads to the upper beam through the C-shaped metal plate structure of the hanging beam, and compared with the prior art that an auxiliary beam transmits the loads to the upper beam through bolts, the scheme optimizes the load transmission path, reduces the risk that the bolts are prone to breakage due to stress concentration, and improves the working efficiency. And the problem of unstable connection caused by loosening or abrasion of bolt connection is also reduced. Vibration and impact loads generated in the operation process of the elevator have little influence on the connecting structure of the scheme.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator technical field especially is connected structure of upper beam and counter -rope wheel subassembly. BACKGROUND

[0002] In the design of counter -rope wheel suspension elevator system, in order to promote the traction ability and optimize the structure layout, a common practice is to add a vice beam on the upper beam of the upper part of the car frame and configure double counter -rope wheels, increase the wrap angle through double counter -rope wheels, thereby increase the traction ability, such as the upper beam structure shown in prior art CN114275648A, the steel wire rope is wound on the two counter -rope wheels on the vice beam, and then the suspension is realized.

[0003] However, the vice beam and the upper beam are connected only through the vertically arranged bolt assembly, when the elevator is running, the load borne by the vice beam is transmitted to the upper beam through the bolt, the stress is highly concentrated at the bolt, and the risk of failure of the connecting structure is relatively high. Vibration and impact load will be generated during the starting, braking and running of the elevator, and these dynamic loads will periodically or instantaneously impact the bolt connection, accelerate the loosening and wear of the bolt, and result in insufficient stability of the connecting structure between the vice beam and the upper beam. SUMMARY

[0004] Therefore, the utility model provides a kind of connecting structure of upper beam and counter -rope wheel subassembly, to solve the problem of insufficient strength and stability of the connecting structure of upper beam and counter -rope wheel subassembly in prior art.

[0005] The utility model provides the scheme, which includes:

[0006] A kind of connecting structure of upper beam and counter -rope wheel subassembly, comprising:

[0007] The upper beam includes two oppositely arranged first C-shaped sheet metals;

[0008] The counter -rope wheel subassembly includes a hanging beam and two counter -rope wheels, the hanging beam includes two oppositely arranged second C-shaped sheet metals, the hanging beam is arranged at the bottom of the upper beam, and the hanging beam and the upper beam are cross arranged, and the counter -rope wheel is arranged between the two second C-shaped sheet metals.

[0009] As a further optional scheme, the upper and lower sides of the two first C-shaped sheet metals are respectively provided with upper and lower connecting plates, and the inner side of the first C-shaped sheet metal is provided with a C-shaped reinforcing sheet metal;

[0010] The upper and lower connecting plates and the C-shaped reinforcing sheet metal correspond in position to the second C-shaped sheet metal in the vertical direction;

[0011] The upper connecting plate, the first C-shaped sheet metal and the C-shaped reinforcing sheet metal are connected by a bolt assembly.

[0012] The lower connecting plate, the first C-shaped sheet metal, the C-shaped reinforcing sheet metal and the second C-shaped sheet metal are connected through a bolt assembly.

[0013] As a further optional solution, the counter-pulley assembly further comprises a shroud arranged on the hanging beam, and a rope passing opening is arranged at the top of the shroud.

[0014] As a further optional solution, a shutter is arranged on the shroud, the shutter is provided with a first strip-shaped hole, the first strip-shaped hole is fixed on the shroud through a bolt assembly, and at least part of the shutter is arranged on the rope passing opening.

[0015] As a further optional solution, a rope stabilizing mechanism is further included, the rope stabilizing mechanism comprises a limiting rod and a second strip-shaped hole arranged on both sides of the shroud, the axis of the limiting rod is parallel to the axis of the counter-pulley, and the limiting rod is arranged below the counter-pulley; the length direction of the second strip-shaped hole is arranged in the vertical direction, the limiting rod is arranged in the second strip-shaped hole, and the two ends of the limiting rod are provided with fixing nuts.

[0016] As a further optional solution, a liftable supporting rod is arranged below the limiting rod, and the top end of the supporting rod abuts against the outside of the limiting rod.

[0017] As a further optional solution, the rope stabilizing mechanism further comprises a mounting bracket outside the shroud, and the supporting rod is threadedly connected to the mounting bracket to realize the lifting of the supporting rod.

[0018] As a further optional solution, the mounting bracket is in a U-shaped structure, the two ends of the mounting bracket are connected to two second C-shaped sheet metals through a bolt assembly, third strip-shaped holes corresponding to the positions of the second strip-shaped holes are arranged on the two sides of the mounting bracket, and the limiting rod passes through the third strip-shaped holes.

[0019] As a further optional solution, a positioning nut is welded on the mounting bracket, and the supporting rod is threadedly connected to the positioning nut; and the top end of the supporting rod passes through the shroud.

[0020] As a further optional solution, the counter-pulley is rotatably sleeved on an axle, the two ends of the axle are arranged on the two second C-shaped sheet metals respectively, and clamping plates for fixing the axle are arranged outside the second C-shaped sheet metals.

[0021] Compared with the prior art, the connection structure of the upper beam and the counter-pulley assembly of the present application has at least the following beneficial effects:

[0022] The upper beam is arranged above the hanging beam in the scheme, the hanging beam has a supporting effect on the upper beam, the hanging beam can transmit the load to the upper beam through the C-shaped sheet metal structure, compared with the prior art in which the sub-beam transmits the load to the upper beam through bolts, the scheme optimizes the load transmission path, reduces the risk of bolt fracture caused by stress concentration, and also reduces the unstable connection problem caused by bolt connection loosening or wear. The vibration and impact load generated by the elevator during starting, braking and running has little effect on the connection structure in the scheme. The upper beam and the hanging beam are both double C-shaped sheet metal structures with excellent strength, and the cross arrangement between the hanging beam and the upper beam enhances the ability of the connection structure to resist dynamic load, prolonging the service life of the elevator car frame. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of a connection structure of an upper beam and a counter-rope wheel assembly according to an embodiment of the present utility model;

[0024] Figure 2 is a side perspective view of a connection structure of an upper beam and a counter-rope wheel assembly according to an embodiment of the present utility model;

[0025] Figure 3 is a connection schematic view of a first C-shaped sheet metal, a second C-shaped sheet metal and a C-shaped reinforcing sheet metal in an embodiment of the present utility model;

[0026] Figure 4 is a side view of a counter-rope wheel assembly in an embodiment of the present utility model;

[0027] Figure 5 is Figure 1 an enlarged view of A in FIG.

[0028] Figure 6 is Figure 1 an enlarged view of B in FIG.

[0029] In the figure: 1, upper beam; 11, first C-shaped sheet metal; 12, upper connecting plate; 13, lower connecting plate; 14, C-shaped reinforcing sheet metal;

[0030] 2, counter-rope wheel assembly; 21, hanging beam; 211, second C-shaped sheet metal; 22, counter-rope wheel; 221, wheel shaft; 222, clamping plate; 23, protective cover; 231, rope passing port; 24, rope stabilizing mechanism; 241, limiting rod; 2411, fixed nut; 242, supporting rod; 243, mounting frame; 2431, third slot; 2432, positioning nut; 25, shutter; 251, first slot. DETAILED DESCRIPTION

[0031] The specific implementation of the present utility model will be described in further detail below in combination with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but not to limit the scope of the present utility model.

[0032] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", 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.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0034] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] refer to Figures 1-6 An embodiment of this utility model illustrates a connection structure between an upper beam and a counter-rope wheel assembly, including an upper beam 1 and a counter-rope wheel assembly 2. The upper beam 1 includes two opposing first C-shaped sheet metals 11; the counter-rope wheel assembly 2 includes a suspension beam 21 and two counter-rope wheels 22. The suspension beam 21 includes two opposing second C-shaped sheet metals 211. The suspension beam 21 is located at the bottom of the upper beam 1 and is arranged intersectingly with the upper beam 1. The counter-rope wheels 22 are located between the two second C-shaped sheet metals 211.

[0036] In this embodiment, the suspension beam 21 is positioned below the upper beam 1, providing support for it. The suspension beam 21, through its double-C-shaped sheet metal structure, transfers load to the upper beam 1. Compared to the prior art where the secondary beam transfers load to the upper beam 1 via bolts, this design optimizes the load transfer path, reduces the risk of bolt breakage due to stress concentration, and minimizes connection instability caused by loose or worn bolts. The vibration and impact loads generated during elevator startup, braking, and operation have minimal impact on the connection structure in this embodiment. Both the upper beam 1 and the suspension beam 21 are high-strength double-C-shaped sheet metal structures, and their intersecting arrangement (vertical intersection in this embodiment) enhances the connection structure's resistance to dynamic loads, extending the service life of the elevator car frame.

[0037] In some embodiments, to further enhance the structural stability of the upper beam 1 and the suspension beam 21, such as Figures 1-3 As shown, an upper connecting plate 12 and a lower connecting plate 13 are respectively provided above and below the two first C-shaped sheet metals 11, and a C-shaped reinforcing sheet metal 14 is provided on the inner side of the first C-shaped sheet metals 11; the upper connecting plate 12, the lower connecting plate 13, and the C-shaped reinforcing sheet metal 14 correspond vertically to the second C-shaped sheet metal 211; the upper connecting plate 12, the first C-shaped sheet metals 11, and the C-shaped reinforcing sheet metal 14 are connected by bolt assemblies (not marked in the figure); the lower connecting plate 13, the first C-shaped sheet metals 11, the C-shaped reinforcing sheet metal 14, and the second C-shaped sheet metal 211 are connected by bolt assemblies (not marked in the figure).

[0038] Specifically, an upper connecting plate 12 and a lower connecting plate 13 are respectively installed above and below the two first C-shaped sheet metal sections 11, making the two first C-shaped sheet metal sections 11 form a more robust whole. In addition, by adding a C-shaped reinforcing sheet metal 14 to the upper beam 1, the C-shaped reinforcing sheet metal 14 corresponds to the support position of the hanging beam 21, which helps to withstand forces and moments from different directions, further enhancing the deformation resistance of the upper beam 1. Moreover, by adding C-shaped reinforcing sheet metal 14 at key locations (referring to the connection position between the upper beam 1 and the hanging beam 21), it is not necessary to require overall reinforcement (such as thickness) of the two first C-shaped sheet metal sections 11, reducing costs and the overall weight of the elevator car frame.

[0039] In some embodiments, such as Figure 1 and Figure 2 As shown, the anti-cord pulley assembly 2 also includes a protective cover 23 disposed on the suspension beam 21; wherein, the protective cover 23 can protect the anti-cord pulley 22, reduce the risk of foreign objects affecting the operation of the anti-cord pulley 22, and also reduce dust accumulation on the anti-cord pulley 22; in addition, the protective cover 23 can also block the noise of the anti-cord pulley 22 during operation from being transmitted to the car top and the car, effectively reducing elevator noise.

[0040] Based on this, in order to achieve the cooperation between the wire rope and the anti-corrosion pulley 22, such as Figure 1 and Figure 5 As shown, the top of the protective cover 23 has a rope passage 231. The wire rope can pass through the rope passage 231 to facilitate engagement with the reversing pulley 22.

[0041] In some embodiments, to ensure that the size of the rope opening 231 is appropriate, such as Figure 5 As shown, a baffle 25 is provided on the protective cover 23. The baffle 25 has a first strip-shaped hole 251, which is fixed to the protective cover 23 by a bolt assembly. At least a portion of the baffle 25 is disposed on the rope passage opening 231. In this embodiment, the installation position of the baffle 25 can be adjusted along the length direction of the first strip-shaped hole 251, thereby changing the size of the portion of the baffle 25 located at the rope passage opening 231. That is, the opening size of the rope passage opening 231 can be adjusted to minimize the gap between the wire rope and the edge of the rope passage opening 231, thereby reducing the possibility of dust or foreign objects entering the interior of the protective cover 23 through the rope passage opening 231.

[0042] In some embodiments, to improve the working stability of the wire rope on the anti-rope pulley 22, such as Figure 2 and Figure 4 As shown, it also includes a rope stabilizing mechanism 24, which includes a limiting rod 241 and a second strip-shaped hole (not shown) disposed on both sides of the protective cover 23. The axis of the limiting rod 241 is parallel to the axis of the anti-rope wheel 22, and the limiting rod 241 is disposed below the anti-rope wheel 22. The length direction of the second strip-shaped hole is arranged vertically, and the limiting rod 241 passes through the second strip-shaped hole. Fixing nuts 2411 are provided at both ends of the limiting rod 241.

[0043] The wire rope is wound on the anti-corrosion pulley 22, and the limiting rod 241 can press the wire rope firmly on the anti-corrosion pulley 22 to prevent the wire rope from jumping and slipping. In addition, the position of the limiting rod 241 can be adjusted through the second strip hole to adjust the distance between the limiting rod 241 and the wire rope. After the position of the limiting rod 241 is adjusted, the fixing nut 2411 can be tightened to press the fixing nut 2411 tightly against the outside of the protective cover 23, thereby fixing the limiting rod 241.

[0044] Furthermore, a liftable support rod 242 can be provided below the limiting rod 241, with the top end of the support rod 242 abutting against the outer side of the limiting rod 241. The support rod 242 further fixes the position of the limiting rod 241, providing secondary protection against wire rope jumping and slippage.

[0045] In other embodiments, to reduce the structural strength requirements of the shield 23, such as Figure 1 ,Figure 4 and Figure 6 As shown, the rope stabilizing mechanism 24 also includes a mounting bracket 243 located outside the protective cover 23. The support rod 242 is threadedly connected to the mounting bracket 243 to realize the lifting and lowering of the support rod 242. Specifically, the mounting bracket 243 has a U-shaped structure. The two ends of the mounting bracket 243 are connected to two second C-shaped sheet metal 211 by bolt assemblies. The two sides of the mounting bracket 243 are provided with third strip holes 2431 corresponding to the positions of the second strip holes. The limiting rod 241 passes through the third strip hole 2431.

[0046] The end of the limiting rod 241 passes through the second strip hole and the third strip hole 2431, that is, it first passes through the protective cover 23 and then through the mounting bracket 243. Then, the fixing nut 2411 on the limiting rod 241 is pressed tightly onto the mounting bracket 243 to fix the limiting rod 241. In addition, the support rod 242 is vertically connected to the mounting bracket 243. In this way, the vibration brought by the wire rope is transmitted from the limiting rod 241 and the support rod 242 to the mounting bracket 243. During manufacturing, only a sheet metal part of sufficient thickness needs to be designed as the mounting bracket 243, which reduces the thickness and strength requirements of the protective cover 23, thereby reducing material costs and the weight of the overall structure.

[0047] In the above scheme, to facilitate the threaded connection between the mounting bracket 243 and the support rod 242, such as Figure 4 As shown, a positioning nut 2432 is welded onto the mounting bracket 243, and the support rod 242 is threadedly connected to the positioning nut 2432; the top end of the support rod 242 passes through the protective cover 23.

[0048] In some embodiments, such as Figure 1 and Figure 2 As shown, the anti-cord pulley 22 is rotatably sleeved on the axle 221. Both ends of the axle 221 are respectively mounted on two second C-shaped sheet metal pieces 211. A retaining plate 222 for fixing the axle 221 is provided on the outside of the second C-shaped sheet metal pieces 211. A through groove (not shown) is provided on the outside of the axle 221 for the retaining plate 222 to engage. The retaining plate 222 is fixed to the second C-shaped sheet metal pieces 211 by bolt assemblies. Multiple retaining plates 222 can be provided. By fixing the axle 221 with the retaining plates 222, the rotation of the anti-cord pulley 22 does not cause the axle 221 to rotate, thus preventing wear on the axle 221 and extending its service life.

[0049] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0050] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A connection structure between an upper beam and a reverse rope pulley assembly, characterized in that, include: The upper beam includes two opposing first C-shaped sheet metal sections; A reverse rope pulley assembly includes a lifting beam and two reverse rope pulleys. The lifting beam includes two opposing second C-shaped sheet metals. The lifting beam is located at the bottom of the upper beam and is arranged intersecting the upper beam. The reverse rope pulleys are located between the two second C-shaped sheet metals.

2. The connection structure between the upper beam and the anti-cord pulley assembly according to claim 1, characterized in that: An upper connecting plate and a lower connecting plate are respectively provided above and below the two first C-shaped sheet metals, and a C-shaped reinforcing sheet metal is provided on the inner side of the first C-shaped sheet metals; The upper connecting plate, the lower connecting plate, and the C-shaped reinforcing sheet metal are vertically aligned with the position of the second C-shaped sheet metal. The upper connecting plate, the first C-shaped sheet metal, and the C-shaped reinforcing sheet metal are connected by a bolt assembly. The lower connecting plate, the first C-shaped sheet metal, the C-shaped reinforcing sheet metal, and the second C-shaped sheet metal are connected by bolt assemblies.

3. The connection structure between the upper beam and the anti-rope pulley assembly according to claim 2, characterized in that: The anti-rope pulley assembly also includes a protective cover mounted on the lifting beam, the top of which has a rope passage opening.

4. The connection structure between the upper beam and the anti-rope pulley assembly according to claim 3, characterized in that: The protective cover is provided with a baffle plate, and the baffle plate has a first strip hole. The first strip hole is fixed to the protective cover by a bolt assembly, and at least a portion of the baffle plate is provided on the rope passage opening.

5. The connection structure between the upper beam and the anti-rope pulley assembly according to claim 3, characterized in that: It also includes a rope stabilizing mechanism, which includes a limiting rod and a second strip-shaped hole on both sides of the protective cover. The axis of the limiting rod is parallel to the axis of the anti-rope wheel, and the limiting rod is located below the anti-rope wheel. The length direction of the second strip-shaped hole is arranged vertically, and the limiting rod passes through the second strip-shaped hole. Fixing nuts are provided at both ends of the limiting rod.

6. The connection structure between the upper beam and the anti-rope pulley assembly according to claim 5, characterized in that: Below the limiting rod is a liftable support rod, the top of which abuts against the outside of the limiting rod.

7. The connection structure between the upper beam and the anti-rope pulley assembly according to claim 6, characterized in that: The rope stabilizing mechanism also includes a mounting bracket located outside the protective cover, and the support rod is threadedly connected to the mounting bracket to realize the raising and lowering of the support rod.

8. The connection structure between the upper beam and the anti-rope pulley assembly according to claim 7, characterized in that: The mounting bracket has a U-shaped structure. Both ends of the mounting bracket are connected to two second C-shaped sheet metal rods by bolt assemblies. The mounting bracket has third strip holes on both sides corresponding to the positions of the second strip holes. The limiting rod passes through the third strip holes.

9. The connection structure between the upper beam and the anti-rope pulley assembly according to claim 8, characterized in that: A positioning nut is welded onto the mounting bracket, and the support rod is threaded to the positioning nut; the top end of the support rod passes through the protective cover.

10. The connection structure between the upper beam and the anti-rope pulley assembly according to claim 1, characterized in that: The anti-cord pulley is rotatably sleeved on the axle, and the two ends of the axle are respectively set on two second C-shaped sheet metals. The second C-shaped sheet metals are provided with a clamping plate for fixing the axle.

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