Heavy-load chain lifter

Abstract

The utility model provides a heavy-load chain lifter which comprises a lifting box and a lifting structure arranged in the lifting box, and the lifting structure is used for lifting a horizontally-arranged chain. The chain comprises rectangular pipes and side connecting plates which are arranged in a staggered mode, the side connecting plates are arranged on the two sides of the rectangular pipes, the rectangular pipes and the side connecting plates are connected through hinge shaft rods, bearing shaft rods are arranged on the rectangular pipes and the side connecting plates, and a part to be lifted is connected with the chain through a mounting plate. A guide groove is formed in the lifting box, and the hinge shaft rod is arranged in the guide groove. The chain lifting device has the advantages that when the chain needs to be lifted, the chain wheel makes contact with the bearing shaft rod through the rotating roller, the rotating roller rotates relative to the bearing shaft rod along with lifting of the chain, and then running fit between the bearing shaft rod and the chain wheel is achieved; compared with direct contact friction between the two ends of an existing bearing shaft rod and a connecting rod, noise in the working process can be greatly reduced, and meanwhile the abrasion condition of the contact portion of the bearing shaft rod and the chain wheel can be reduced.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical structures, and particularly relates to a heavy-duty chain lifter. Background Art

[0002] When the chain of the existing heavy-duty chain lifter is running, the friction between the chain links and the box body and the sprocket is relatively large, resulting in serious wear, thus shortening the service life of the chain. In addition, the noise generated during the friction process is relatively large, affecting the operating environment and user experience of the equipment. These problems are particularly obvious in heavy-duty application scenarios, restricting the wide application of existing rigid chains. Summary of the Utility Model

[0003] In view of this, the utility model aims to provide a heavy-duty chain lifter to solve at least one problem in the background art.

[0004] To achieve the above object, the technical solution of the utility model is realized as follows:

[0005] A heavy-duty chain lifter, including a lifting box and a lifting structure arranged in the lifting box, the lifting structure is used to lift the horizontally placed chain;

[0006] The chain includes alternately arranged rectangular tubes and side connecting plates, the side connecting plates are arranged on both sides of the rectangular tubes, the rectangular tubes and the side connecting plates are connected by hinge shaft rods, and bearing shaft rods are arranged on the rectangular tubes and the side connecting plates, and the component to be lifted is connected to the chain through a mounting plate;

[0007] A guide groove is arranged in the lifting box, and the hinge shaft rod is arranged in the guide groove;

[0008] The lifting structure includes a sprocket, both ends of the sprocket are rotationally connected to the lifting box through bearings, and a lifting motor is connected to one end of the sprocket, and the lifting motor drives the chain to lift by using the sprocket;

[0009] Rollers are arranged at both ends of the bearing shaft rod, the rollers are rotationally connected relative to the bearing shaft rod, and the bearing shaft rod contacts the teeth and tooth grooves of the sprocket through the rollers.

[0010] Furthermore, two vertically arranged hinge shaft rods are arranged on the rectangular tube, and the rectangular tube is respectively hinged to the adjacent upper and lower side connecting plates by using the two hinge shaft rods; two first bearing grooves are arranged on the rectangular tube, and a first bearing shaft rod is arranged on the rectangular tube, and the first bearing shaft rod is arranged between the first bearing grooves;

[0011] A second bearing shaft rod and two second bearing grooves are arranged on the side connecting plate;

[0012] The first bearing shaft rod is arranged in the second bearing groove, and the second bearing shaft rod is arranged in the first bearing groove.

[0013] Furthermore, both the first bearing groove and the second bearing groove are semi-circular groove structures. The adjacent two first bearing grooves and the adjacent two second bearing grooves are spliced to form a circular bearing groove, and the first bearing shaft rod and the second bearing shaft rod are arranged in the circular bearing groove.

[0014] Furthermore, a fillet structure is provided at the inner corner part of the rectangular pipe and the side connection plate.

[0015] Furthermore, both sides of the lifting box are side plates. The bearing is installed on the side plates through a bearing seat, and a lower semi-circular mounting hole for accommodating the bearing seat is provided on the side plates;

[0016] A limiting groove structure is provided on the outer wall of the bearing seat, and a limiting flange matched with the limiting groove is provided at the lower semi-circular mounting hole part of the side plate. The bearing seat is clamped in the limiting flange through the limiting groove structure below;

[0017] It includes a plug-in vertical plate which is arranged above the bearing seat. The plug-in vertical plate is provided with an upper semi-circular mounting hole matched with the bearing seat, and a limiting flange matched with the limiting groove is provided at the upper semi-circular mounting hole part of the plug-in vertical plate;

[0018] The plug-in vertical plate is detachably installed on the side plate, and the bearing seat is detachably installed on the lifting box by using the side plate and the plug-in vertical plate.

[0019] Furthermore, an installation groove for accommodating the bearing is provided in the bearing seat. The outer ring of the bearing contacts the installation groove, and a rotating shaft is provided on the inner ring. A sprocket is sleeved on the rotating shaft, and the sprocket is connected with a lifting motor through the rotating shaft.

[0020] Furthermore, the sprocket is installed on the rotating shaft through a spacer sleeve.

[0021] Furthermore, two sprockets are provided, and a chain is arranged between the two sprockets to laterally limit the chain by using the sprockets.

[0022] Furthermore, side tightening wheels are provided on the inner sides of the two side plates. The side tightening wheels contact the outer wall of the side connection plate, and the side tightening wheels are arranged between the hinge shaft rod and the bearing shaft rod.

[0023] Furthermore, it includes a storage box. The guide groove in the storage box is connected with the guide groove in the lifting box, and the chain to be lifted is stored in the storage box.

[0024] Compared with the prior art, the heavy-duty chain lifter described in the present utility model has the following beneficial effects:

[0025] (1) For the heavy-duty chain lifter of the present utility model, rollers are provided at both ends of the bearing shaft. The rollers are rotatably connected to the bearing shaft, and the bearing shaft contacts the teeth and tooth grooves of the sprocket through the rollers. When it is necessary to lift the chain using the sprocket, the sprocket contacts the bearing shaft through the rollers. As the chain rises and falls, the rollers rotate relative to the bearing shaft, thereby realizing the rotational cooperation between the bearing shaft and the sprocket. Compared with the existing direct contact friction between both ends of the bearing shaft and the connection, the noise during the working process can be greatly reduced, and at the same time, the wear of the contact part between the bearing shaft and the sprocket can be reduced.

[0026] (2) For the heavy-duty chain lifter of the present utility model, side tightening wheels are provided inside the two side plates. The side tightening wheels contact the outer wall of the side connecting plate. The side tightening wheels are arranged between the hinge shaft rod and the bearing shaft. On the one hand, the side tightening wheels can limit the chain in the left-right direction to prevent the chain from swinging left and right. On the other hand, by using the structure of the side tightening wheels to contact the side wall of the chain, the contact with the side wall of the chain can be reduced, the noise generated during the lifting process of the chain can be reduced, and at the same time, the wear of the side wall of the chain can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0028] Figure 1 is a three-dimensional schematic diagram of the overall structure according to an embodiment of the present utility model;

[0029] Figure 2 is a schematic plan view of the internal structure according to an embodiment of the present utility model;

[0030] Figure 3 is a schematic diagram of the chain structure according to an embodiment of the present utility model;

[0031] Figure 4 is a schematic diagram of the lifting box structure according to an embodiment of the present utility model;

[0032] Figure 5 is a schematic diagram of the rectangular tube structure according to an embodiment of the present utility model;

[0033] Figure 6 is a schematic diagram of the side connecting plate structure according to an embodiment of the present utility model;

[0034] Figure 7 is a partial schematic diagram of the overall structure according to an embodiment of the present utility model.

[0035] Description of the reference numerals:

[0036] 1 - Chain; 11 - Rectangular tube; 111 - Hinge shaft rod; 112 - First bearing groove; 113 - First bearing shaft rod; 12 - Side connecting plate; 121 - Second bearing shaft rod; 122 - Second bearing groove; 13 - Rounded corner structure; 14 - Roller; 15 - Mounting plate; 2 - Lifting box; 21 - Sprocket; 22 - Bearing; 23 - Side plate; 231 - Limiting flange; 24 - Bearing seat; 241 - Limiting groove; 242 - Mounting groove; 25 - Insertion vertical plate; 26 - Rotating shaft; 27 - Sleeve; 28 - Side tightening wheel; 3 - Storage box; 4 - Guide groove. Detailed implementation mode

[0037] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0038] The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0039] This solution discloses a high-precision heavy-duty chain 1 lifter, including a lifting box 2 and a lifting structure arranged in the lifting box 2. At the same time, a storage box 3 is provided. The guide groove 4 in the storage box 3 is connected to the guide groove 4 in the lifting box 2. The chain 1 to be lifted is stored in the storage box 3. The component to be lifted is connected to the chain 1 through the mounting plate 15. The chain 1 to be lifted is arranged in the storage box 3 when not in use. When it is necessary to lift the part to be lifted by using the chain 1, first, the mounting plate 15 is used to connect with the part to be lifted. The part to be lifted can be an item to be lifted. Then, the lifting motor in the lifting mechanism drives the sprocket 21 to rotate, and then drives the chain 1 to move synchronously, realizing the lifting of the part to be lifted. At this time, the chain 1 gradually extends out from the storage box 3. When it is necessary to lower the part to be lifted, the lifting motor is used to drive the sprocket 21 to rotate in the reverse direction. At this time, the chain 1 is re-stored in the storage box 3;

[0040] The structure of the chain 1 is as shown in the figure, mainly including a rectangular tube 11 and a side connecting plate 12. The rectangular tube 11 and the side connecting plate 12 are arranged alternately. The side connecting plate 12 is arranged on both sides of the rectangular tube 11. The rectangular tube 11 and the side connecting plate 12 are connected by a hinge shaft rod 111. Bearing shaft rods are arranged on the rectangular tube 11 and the side connecting plate 12. There are two vertically arranged hinge shaft rods 111 on the rectangular tube 11. The rectangular tube 11 is respectively hinged to the adjacent side connecting plates 12 above and below by the two hinge shaft rods 111; There are two first bearing grooves 112 on the rectangular tube 11. A first bearing shaft rod 113 is arranged on the rectangular tube 11. The first bearing shaft rod 113 is arranged between the first bearing grooves 112; A second bearing shaft rod 121 and two second bearing grooves 122 are arranged on the side connecting plate 12; The first bearing shaft rod 113 is arranged in the second bearing groove 122, and the second bearing shaft rod 121 is arranged in the first bearing groove 112;

[0041] As shown in the figure, the first bearing groove 112 and the second bearing groove 122 in this solution are both semi-circular groove structures. The splicing positions between two adjacent first bearing grooves 112 and two adjacent second bearing grooves 122 form a circular bearing groove. The first bearing shaft rod 113 and the second bearing shaft rod 121 are arranged in the circular bearing groove. During the normal use of the chain 1, since there are items to be lifted on the mounting plate 15, the items to be lifted provide a downward pressure to the chain 1, which can force the horizontal contact surface of the chain 1 formed by the rectangular pipe 11 and the side connection plate 12 to be pressed tightly. At the same time, in cooperation with the above-mentioned semi-circular groove-shaped first bearing groove 112 and second bearing groove 122 and the first bearing shaft rod 113 and second bearing shaft rod 121, the stability of the lifting of the chain 1 is improved.

[0042] At the same time, in this solution, in order to cooperate with the chain 1 to change from a horizontal state to a vertical state in the storage box, a rounded corner structure 13 is provided at the inner corner part of the rectangular pipe 11 and the side connection plate 12.

[0043] On both sides of the lifting box 2 in this solution are side plates 23. The bearing 22 is installed on the side plate 23 through a bearing seat 22. The side plate 23 is provided with a lower semi-circular mounting hole for accommodating the bearing seat 22; a limiting groove 241 structure is provided on the outer wall of the bearing seat 22, and a limiting flange 231 matching the limiting groove 241 is provided at the lower semi-circular mounting hole part of the side plate 23. The bearing seat 22 is clamped in the limiting flange 231 through the limiting groove 241 structure; including a plug-in vertical plate 25, the plug-in vertical plate 25 is arranged above the bearing seat 22, and the plug-in vertical plate 25 is provided with an upper semi-circular mounting hole matching the bearing seat 22. A limiting flange 231 matching the limiting groove 241 is provided at the upper semi-circular mounting hole part of the plug-in vertical plate 25; the plug-in vertical plate 25 is detachably installed on the side plate 23, and the bearing seat 22 is detachably installed on the lifting box 2 by using the side plate 23 and the plug-in vertical plate 25.

[0044] An installation groove 242 for accommodating the bearing 22 is provided in the bearing seat 22. The outer ring of the bearing 22 contacts the installation groove 242, and a rotating shaft 26 is provided on the inner ring. The sprocket 21 is sleeved on the rotating shaft 26, and the sprocket 21 is connected to a lifting motor through the rotating shaft 26.

[0045] At the same time, the sprocket 21 in this solution is installed on the rotating shaft 26 through a spacer sleeve 27.

[0046] At the same time, there are two sprockets 21 in this solution, and the chain 1 is arranged between the two sprockets 21 to laterally limit the chain 1 by using the sprockets 21.

[0047] On the inner sides of the two side plates 23, there are side tightening wheels 28 which are in contact with the outer walls of the side connecting plates 12. The side tightening wheels 28 are arranged between the hinge shaft rods 111 and the bearing shaft rods. Those of ordinary skill in the art can realize that the units and method steps of each example described in combination with the embodiments disclosed in this article can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described according to functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present utility model.

[0048] In several embodiments provided in this application, it should be understood that the disclosed methods and systems can be implemented in other ways. For example, the above-mentioned division of units is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. The above-mentioned units may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present utility model.

[0049] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model, and they should all be covered by the scope of the claims and the description of the present utility model.

[0050] The above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Heavy-duty chain lifter, characterized by: It comprises a lifting box (2) and a lifting structure arranged in the lifting box (2), wherein the lifting structure is used to lift a horizontally placed chain (1); The chain (1) comprises staggered rectangular tubes (11) and side connecting plates (12), the side connecting plates (12) being arranged on both sides of the rectangular tube (11), the rectangular tube (11) and the side connecting plates (12) being connected via a hinged shaft (111), the rectangular tube (11) and the side connecting plates (12) being provided with load-bearing shafts, and the components to be lifted being connected to the chain (1) via a mounting plate (15); A guide groove (4) is provided in the lifting box (2), and a hinge shaft (111) is provided in the guide groove (4); The lifting structure comprises a sprocket (21), both ends of the sprocket (21) are rotatably connected to the lifting box (2) through bearings (22), one end of the sprocket (21) is connected to a lifting motor, and the lifting motor drives the chain (1) to lift and lower by means of the sprocket (21); Rollers (14) are provided at the ends of both ends of the bearing shaft rod. The rollers (14) are rotatably connected relative to the bearing shaft rod. The bearing shaft rod contacts the teeth and tooth grooves of the sprocket wheel (21) through the rollers (14).

2. The heavy-duty chain lifter according to claim 1, characterized in that: The rectangular tube (11) is provided with two vertically arranged hinged shafts (111), and the rectangular tube (11) is hinged to the adjacent side connecting plates (12) located above and below by using the two hinged shafts (111); the rectangular tube (11) is provided with two first bearing grooves (112), and the rectangular tube (11) is provided with a first bearing shaft (113), and the first bearing shaft (113) is arranged between the first bearing grooves (112); A second bearing shaft (121) and two second bearing grooves (122) are provided on the side connecting plate (12); The first bearing shaft rod (113) is arranged in the second bearing groove (122), and the second bearing shaft rod (121) is arranged in the first bearing groove (112).

3. The heavy-duty chain lifter according to claim 2, characterized in that: The first bearing groove (112) and the second bearing groove (122) are both semicircular groove structures. Two adjacent first bearing grooves (112) and two adjacent second bearing grooves (122) are spliced ​​to form a circular bearing groove. The first bearing shaft rod (113) and the second bearing shaft rod (121) are arranged in the circular bearing groove.

4. The heavy-duty chain lifter according to claim 1, characterized in that: The inner corners of the rectangular tube (11) and the side connecting plate (12) are provided with rounded corner structures (13).

5. The heavy-duty chain lifter according to claim 1, characterized in that: The two sides of the lifting box (2) are side plates (23), the bearing (22) is installed on the side plates (23) through the bearing seat (24), and the side plates (23) are provided with lower semicircular mounting holes for accommodating the bearing seat (24); The outer wall of the bearing seat (24) is provided with a limiting groove (241) structure, and the lower semicircular mounting hole of the side plate (23) is provided with a limiting flange (231) matched with the limiting groove (241), and the lower part of the bearing seat (24) is clamped in the limiting flange (231) through the limiting groove (241) structure; The plug-in vertical plate (25) is provided above the bearing seat (24), the plug-in vertical plate (25) is provided with an upper semicircular mounting hole matched with the bearing seat (24), and a limiting flange (231) matched with the limiting groove (241) is provided at the upper semicircular mounting hole of the plug-in vertical plate (25); The plug-in vertical plate (25) is detachably mounted on the side plate (23), and the bearing seat (24) is detachably mounted on the lifting box (2) by means of the side plate (23) and the plug-in vertical plate (25).

6. The heavy-duty chain lifter according to claim 5, characterized in that: The bearing seat (24) is provided with a mounting groove (242) for accommodating the bearing (22); the outer ring of the bearing (22) contacts the mounting groove (242); the inner ring is provided with a rotating shaft (26); the sprocket (21) is sleeved on the rotating shaft (26); and the sprocket (21) is connected to a lifting motor via the rotating shaft (26).

7. The heavy-duty chain lifter according to claim 6, characterized in that: The sprocket (21) is mounted on the rotating shaft (26) via a spacer (27).

8. The heavy-duty chain lifter according to claim 7, characterized in that: Two sprocket wheels (21) are provided, and the chain (1) is provided between the two sprocket wheels (21). The sprocket wheels (21) are used to limit the chain (1) in the transverse direction.

9. The heavy-duty chain lifter according to claim 5, characterized in that: Side tension wheels (28) are arranged on the inner sides of the two side plates (23), the side tension wheels (28) are in contact with the outer wall of the side connecting plate (12), and the side tension wheels (28) are arranged between the hinge shaft (111) and the bearing shaft.

10. The heavy-duty chain lifter according to claim 1, characterized in that: It comprises a storage box (3), wherein a guide groove (4) in the storage box (3) is connected with a guide groove (4) in a lifting box (2), and a chain (1) to be lifted is stored in the storage box (3).

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