Disc spring group hoisting device

Abstract

A disc spring set hoisting device comprises a fixing base, a swing rod assembly, a hoisting piece, a connecting base, a connecting rod and a push-pull device, the fixing base comprises three fixing plates arranged in a radial mode, the ends, away from the center, of the fixing plates are hinged to one end of the swing rod assembly, and the other end of the swing rod assembly is hinged to the upper end of the hoisting piece; a limiting part extending inwards is arranged at the lower end of the hoisting piece, the connecting base is arranged below the fixing base, and the push-pull device is installed on the lower side of the fixing base and connected with the connecting base below the push-pull device; the swing rod assembly comprises a first swing rod and a second swing rod, the first swing rod and the second swing rod are arranged in parallel, connecting rods with the same number as the fixing plates are installed on the connecting base in a hinged mode, and the connecting rods are further hinged to the first swing rod or the second swing rod. And a lifting lug is also arranged on the fixed seat. The hoisting device can be well used for hoisting the disc spring in an operating mechanism maintenance scene.

Description

Technical Field

[0001] The utility model relates to the technical field of operating mechanism maintenance tools, in particular to a disc spring assembly hoisting device. Background Art

[0002] When the operating mechanism of a hydropower station is being repaired, the disc spring on the operating mechanism needs to be removed and reinstalled after the main part is overhauled. The disc spring is composed of multiple disc spring sheets stacked axially. Due to the heavy weight and large number of disc spring sheets, it is not convenient to carry them manually.

[0003] Chinese patent document CN202729555U discloses a disc spring assembly lifting tool. When in use, the base is placed on the bottom surface of the disc spring assembly and then lifted by the lifting ring. However, in the operating mechanism maintenance scenario, the central axis of the disc spring is equipped with parts that need to be avoided, so the tool cannot be used in the operating mechanism maintenance scenario. Therefore, a lifting device for disc springs is designed. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, and to provide a disc spring assembly lifting device for lifting disc springs in the operating mechanism maintenance scenario.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a disc spring group lifting device, including a fixed seat, a rocker arm assembly, a lifting member, a connecting seat, a connecting rod and a push-pull device, the fixed seat includes at least three radially arranged fixing plates, one end of the fixing plate away from the center is hinged to one end of the rocker arm assembly, the other end of the rocker arm assembly is hinged to the upper end of the lifting member, the lower end of the lifting member is provided with a limiting portion extending inward, the connecting seat is arranged below the fixed seat, the push-pull device is installed on the lower side of the fixed seat, and the push-pull device is connected to the connecting seat below; the rocker arm assembly includes a first rocker arm and a second rocker arm, the first rocker arm and the second rocker arm are arranged in parallel, and the connecting seat is hingedly installed with connecting rods of the same number as the fixed plates, and each connecting rod is also respectively hinged to the first rocker arm or the second rocker arm; the fixed seat is also provided with a lifting ear.

[0006] The push-pull device is a commutator or a reducer with an input shaft and an output shaft arranged at right angles. The output shaft of the push-pull device extends downward and is threadedly connected to the connecting seat. A handle is installed on the input shaft of the push-pull device.

[0007] The push-pull device is a jack, and the telescopic end of the push-pull device is connected to the connecting seat.

[0008] The first swing arm and the second swing arm are both composed of two plates, and the two plates are respectively arranged on both sides of the fixing plate and the hanging member.

[0009] The fixing plate is installed on the bottom plate, and the push-pull device is installed on the lower side of the bottom plate.

[0010] The connecting seat comprises a connecting sleeve and a plurality of mounting grooves arranged on the outer wall of the connecting sleeve, the connecting rod is hinged to the mounting grooves, and the push-pull device is connected to the connecting sleeve for transmission.

[0011] The utility model has the following beneficial effects:

[0012] When the utility model is in use, the connecting seat is driven upward by the push-pull device, the connecting rod pushes the second swing rod of the swing rod assembly, the lower end of the swing rod assembly swings outward, and the hanging part follows the swing rod assembly to swing. Since the first swing rod and the second swing rod are arranged in parallel, the hanging part can swing in translation when following the swing. When the inner hollow diameter of the three hanging parts is larger than the diameter of the disc spring group, the hanging device can be put on the outside of the disc spring group from top to bottom. After that, the connecting seat is driven downward by the push-pull device, the connecting rod pulls the second swing rod of the swing rod assembly inward, the lower end of the swing rod assembly swings inward, and the hanging part follows the swing rod assembly to swing inward, so that the three hanging parts hold the disc spring group. At this time, the limiting part extends into the inner side of the lower end of the disc spring group, and the disc spring group is lifted by the lifting ear, so that it can be well used for the lifting of the disc spring in the operating mechanism maintenance scene. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the connecting seat of the utility model.

[0017] Figure 4 This is a state diagram used in the present utility model.

[0018] Reference numerals:

[0019] Fixed seat 10, fixed plate 11, lifting ear 12, bottom plate 13, first swing arm 20, second swing arm 30, hanging piece 40, limiting part 41, connecting seat 50, connecting sleeve 51, mounting groove 52, connecting rod 60, push-pull device 70, output shaft 71, handle 72, disc spring assembly 80. DETAILED DESCRIPTION

[0020] See also Figure 1-4A disc spring assembly lifting device comprises a fixed seat 10, a rocker assembly, a lifting member 40, a connecting seat 50, a connecting rod 60 and a push-pull device 70. The fixed seat 10 comprises three radially arranged fixed plates 11, one end of the fixed plate 11 away from the center is hinged to one end of the rocker assembly, the other end of the rocker assembly is hinged to the upper end of the lifting member 40, and the lower end of the lifting member 40 is provided with a limiting portion 41 extending inwardly, the connecting seat 50 is arranged below the fixed seat 10, and the push-pull device 70 is installed on the lower side of the fixed seat 10, and the push-pull device 70 is connected to the connecting seat 50 below; the rocker assembly comprises a first rocker 20 and a second rocker 30, the first rocker 20 and the second rocker 30 are arranged in parallel, and the connecting seat 50 is hingedly installed with the same number of connecting rods 60 as the fixed plate 11, and each connecting rod 60 is also hinged to the first rocker 20 or the second rocker 30 respectively; the fixed seat 10 is also provided with a lifting ear 12. The connecting seat 50 is driven upward by the push-pull device 70, and the connecting rod 60 pushes the second swing rod 30 of the swing rod assembly, and the lower end of the swing rod assembly swings outward, and the hanging member 40 follows the swing of the swing rod assembly. Since the first swing rod 20 and the second swing rod 30 are arranged in parallel, the hanging member 40 can swing in translation when following the swing. When the inner hollow diameter of the three hanging members 40 is larger than the diameter of the disc spring group 80, at this time, the hanging device can be put on the outside of the disc spring group from top to bottom, such as Figure 4 Afterwards, the push-pull device 70 drives the connecting seat 50 to move downward, the connecting rod 60 pulls the second swing rod 30 of the swing rod assembly inward, the lower end of the swing rod assembly swings inward, and the hanging member 40 follows the swing rod assembly to swing inward, so that the three hanging members 40 hold the disc spring assembly 80, and at this time, the limiting portion 41 extends into the inner side of the lower end of the disc spring assembly 80, so that the disc spring assembly 80 can be lifted through the lifting ear 12.

[0021] In one implementation, see Figure 2 The push-pull device 70 is a commutator or a reducer with an input shaft and an output shaft arranged at right angles. The output shaft 71 of the push-pull device 70 extends downward and is threadedly connected to the connecting seat 50. A handle 72 is installed on the input shaft of the push-pull device 70. The input shaft of the push-pull device 70 is rotated by the handle 72, which drives the output shaft 71 of the push-pull device 70 to rotate, thereby driving the connecting seat 50 to move up and down.

[0022] In another embodiment, the push-pull device 70 is a jack, and the telescopic end of the push-pull device 70 is connected to the connecting seat 50. The connecting seat 50 is pushed and pulled by the jack, thereby driving the connecting seat 50 to move up and down. For example, a double-head connection jack with a self-return function disclosed in CN212712528U is used. When used, the wear-resistant block, the first top block, the second top block and the screw rod are discarded, the base can be welded to the bottom of the fixed seat 10, and the fixed plate can be a circle, and the connecting rod 60 is hinged to the groove on the fixed plate. The fixed plate is pushed by the manual jack body, and when the manual jack body is depressurized, the fixed plate is pulled back by the spring 8.

[0023] For details, see Figure 1 The first swing rod 20 and the second swing rod 30 are both composed of two plates, which are respectively arranged on both sides of the fixed plate 11 and the hanging member 40. The structure is simple and convenient for the installation of the swing rod assembly. In this figure, the hanging member 40 is shown in a "7" shape, and the upper end of the hanging member 40 is respectively pivotally connected to the first swing rod 20 and the second swing rod 30.

[0024] For further information, see Figure 2 The fixing plate 11 is welded and installed on the bottom plate 13, and the push-pull device 70 is installed on the lower side of the bottom plate 13 by bolts. It is convenient to install the push-pull device 70 and improve the stability of the connection of each fixing plate 11.

[0025] See also Figure 3 The connection seat 50 includes a connection sleeve 51 and a plurality of mounting grooves 52 arranged on the outer wall of the connection sleeve 51, the connecting rod 60 is hinged with the mounting groove 52, and the push-pull device 70 is connected to the connection sleeve 51 for transmission. When the push-pull device 70 adopts a commutator or a reducer in which the input shaft and the output shaft are arranged at right angles, the input shaft 71 is threadedly connected with the center hole of the connection sleeve 51, and when the push-pull device 70 is a jack, the telescopic end of the jack can be threadedly connected with the connection sleeve 51.

[0026] In addition to the above structure, the connecting seat 50 may also adopt a circular plate structure, in which a hole is arranged at the center and a mounting groove 52 is arranged on the outer circumference.

[0027] The working principle or action process of the utility model is as follows:

[0028] See also Figure 4 In a preferred embodiment, when in use, the handle 72 is rotated, and the output shaft 71 of the push-pull device 70 rotates, thereby driving the connecting seat 50 to move upward, and the connecting rod 60 pushes the second rocker arm 30 of the rocker arm assembly, and the lower end of the rocker arm assembly swings outward, and the hanging member 40 swings with the rocker arm assembly. When the inner hollow diameter of the three hanging members 40 is larger than the diameter of the disc spring group 80, at this time, the hanging device can be put on the outside of the disc spring group from top to bottom.

[0029] Afterwards, the handle 72 is rotated in the opposite direction, and the output shaft 71 of the push-pull device 70 rotates in the opposite direction, thereby driving the connecting seat 50 to move downward, and the connecting rod 60 pulls the second rocker arm 30 of the rocker arm assembly inward, and the lower end of the rocker arm assembly swings inward, and the hanging parts 40 swing inward with the rocker arm assembly, so that the three hanging parts 40 hold the disc spring group 80. At this time, the limiting part 41 extends into the inner side of the lower end of the disc spring group 80, so that the disc spring group 80 can be lifted by the lifting ear 12.

Claims

1. A disc spring assembly hoisting device, characterized in that: The invention comprises a fixing seat (10), a swing arm assembly, a hanging member (40), a connecting seat (50), a connecting rod (60) and a push-pull device (70), wherein the fixing seat (10) comprises at least three fixing plates (11) arranged radially, one end of the fixing plate (11) away from the center is hinged to one end of the swing arm assembly, the other end of the swing arm assembly is hinged to the upper end of the hanging member (40), the lower end of the hanging member (40) is provided with a limiting portion (41) extending inwardly, the connecting seat (50) is arranged below the fixing seat (10), and the push-pull device (70) is provided with a connecting rod (60) and a push-pull device (70). The device (70) is mounted on the lower side of the fixed seat (10), and the push-pull device (70) is connected to the connecting seat (50) below; the swing arm assembly comprises a first swing arm (20) and a second swing arm (30), the first swing arm (20) and the second swing arm (30) are arranged in parallel, and the connecting seat (50) is hingedly mounted with connecting rods (60) of the same number as the fixed plate (11), and each connecting rod (60) is also hingedly connected to the first swing arm (20) or the second swing arm (30); and the fixed seat (10) is also provided with a lifting ear (12).

2. A disc spring assembly hoisting device according to claim 1, characterized in that: The push-pull device (70) is a commutator or a reducer in which the input shaft and the output shaft are arranged at right angles. The output shaft (71) of the push-pull device (70) extends downward and is threadedly connected to the connecting seat (50). A handle (72) is installed on the input shaft of the push-pull device (70).

3. The disc spring assembly hoisting device according to claim 1, characterized in that: The push-pull device (70) is a jack, and the telescopic end of the push-pull device (70) is connected to the connecting seat (50).

4. The disc spring assembly hoisting device according to claim 1, characterized in that: The first swing arm (20) and the second swing arm (30) are both composed of two plate bodies, and the two plate bodies are respectively arranged on both sides of the fixed plate (11) and the hanging component (40).

5. A disc spring assembly hoisting device according to claim 1, 2 or 3, characterized in that: The fixing plate (11) is mounted on the bottom plate (13), and the push-pull device (70) is mounted on the lower side of the bottom plate (13).

6. A disc spring assembly hoisting device according to claim 1, 2 or 3, characterized in that: The connecting seat (50) comprises a connecting sleeve (51) and a plurality of mounting grooves (52) arranged on the outer wall of the connecting sleeve (51); the connecting rod (60) is hingedly connected to the mounting groove (52); and the push-pull device (70) is connected to the connecting sleeve (51) for transmission.

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