Limiting and mounting structure for lifting of electric hoist

Abstract

The utility model relates to an electric hoist lifting limiting installation structure in the technical field of lifting, which comprises a cam type rotary limiter, a lifting winding drum and a winding drum supporting frame, and shaft bodies at the two ends of a drum shaft of the lifting winding drum are rotationally installed on the winding drum supporting frame through bearings. One end of a drum shaft of the lifting drum is in corresponding transmission connection with an input shaft end of the cam type rotary limiter; the winding drum supporting frame comprises a bearing seat plate, an installation hole used for installing and fixing a bearing is formed in the center of the plate face of the bearing seat plate, a protection check ring is fixed to the periphery of the outer plate face of the bearing seat plate, the cam type rotation limiting stopper is fixedly installed in the protection check ring, and an input shaft of the cam type rotation limiting stopper perpendicularly corresponds to the corresponding shaft end of a drum shaft of the lifting winding drum. A driven gear is coaxially fixed to an input shaft of the cam type rotation limiting stopper, and an end face gear correspondingly meshed with the driven gear is coaxially fixed to the corresponding shaft end of a roller shaft of the lifting roller. According to the lifting limiting mounting structure, the mounting size can be shortened, and the mounting stability and the safety protection performance are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting, in particular to a lifting limit installation structure of an electric hoist. Background Art

[0002] As a light and small lifting equipment, the common electric hoist has been widely used in various workplaces for its simple operation and lightweight structure. The existing electric hoist lifting limit mostly adopts a cam-type rotary limiter, and the installation method is mostly flange-type installation. As shown in the crane lifting limiter disclosed in the Chinese utility model patent with announcement number CN203255909U, since the input shaft of the rotary limiter and the drum shaft are coaxially installed, the tail of the electric hoist drum extends a long length and there are no corresponding protection measures. It is extremely easy to bump during installation, transportation and use, which causes the lifting rotary limit to be damaged and cannot be repaired. A new cam-type rotary limiter can only be replaced, which causes certain troubles to the installation and transportation personnel and users. Utility Model Content

[0003] In order to overcome the deficiencies in the background technology and solve the existing technical problems, the utility model discloses an electric hoist lifting limit installation structure, which can shorten the installation size and improve the installation stability and safety protection.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A lifting limit installation structure for an electric hoist includes a cam-type rotary limiter, a lifting drum and a drum support frame, wherein the shaft bodies at both ends of the lifting drum's cylinder shaft are rotatably installed on the drum support frame through bearings, and one end of the cylinder shaft of the lifting drum is correspondingly connected to the input shaft end of the cam-type rotary limiter by transmission; the drum support frame includes a bearing seat plate, and the center of the bearing seat plate surface is provided with a mounting hole for installing a fixed bearing, and a protective retaining ring is fixed around the outer surface of the bearing seat plate, the cam-type rotary limiter is installed and fixed in the protective retaining ring, and the input shaft of the cam-type rotary limiter is perpendicular to the corresponding shaft end of the lifting drum's cylinder shaft, the input shaft of the cam-type rotary limiter is coaxially fixed with a driven gear, and the corresponding shaft end of the cylinder shaft of the lifting drum is coaxially fixed with an end face gear that meshes with the driven gear.

[0006] Furthermore, a plurality of ribs are evenly arranged on the outer surface of the bearing seat plate.

[0007] Furthermore, the housing of the cam type rotation limiter is fixed to the outer surface of the bearing seat plate.

[0008] Furthermore, the outer port of the protective retaining ring is detachably covered with a cover.

[0009] Furthermore, the drum support frame is provided with two bearing seat plates corresponding to the two ends of the drum shaft of the lifting drum, and the upper ends of the two bearing seat plates are fixedly connected by a transverse connecting plate.

[0010] Furthermore, the lifting drum is provided with lifting motors spaced apart and arranged side by side, and the output shaft of the lifting motor is correspondingly connected to the other end of the shaft of the lifting drum.

[0011] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0012] The electric hoist lifting limit installation structure disclosed by the utility model changes the installation direction of the cam type rotary limiter by setting the engagement of the end gear and the driven gear, which not only shortens the installation length and leaves more space, but also enables the shell of the cam type rotary limiter to be fixed more firmly, and the added protective retaining ring can also provide further safety protection. Compared with the installation structure of the traditional limiter, the utility model is not only more stable to install, but also the limiter is not easily damaged by external obstacles during installation, transportation and use, which greatly reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the implementation structure of the utility model;

[0014] Figure 2 yes Figure 1 A magnified schematic diagram of part A.

[0015] In the figure: 1. Lifting drum; 2. Lifting motor; 3. Protective retaining ring; 4. Bearing seat plate; 5. Cross-connecting plate; 6. Cam-type rotation limiter; 7. Driven gear; 8. End gear; 9. Bearing; 10. Rib plate. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" and the like indicating directions or positional relationships, these are merely corresponding to the drawings of the present invention and are for the convenience of describing the present invention. They do not indicate or imply that the devices or components referred to must have a specific direction.

[0017] Combined with attachment Figure 1-2The electric hoist lifting limit installation structure includes a cam-type rotary limiter 6, a lifting drum 1 and a drum support frame. The shaft bodies at both ends of the cylinder shaft of the lifting drum 1 are rotatably installed on the drum support frame through bearings 9, and one end of the cylinder shaft of the lifting drum 1 is correspondingly connected to the input shaft end of the cam-type rotary limiter 6 through transmission. The cylinder shaft of the lifting drum 1 is connected through the cam-type rotary limiter 6 to obtain a rotation signal for limiting. According to needs, the lifting drum 1 is provided with a lifting motor 2 at intervals and side by side. The output shaft of the lifting motor 2 is correspondingly connected to the other end of the cylinder shaft of the lifting drum 1 through transmission, ensuring that the entire lifting structure is compact and the layout is reasonable.

[0018] The drum support frame includes a bearing seat plate 4. The bearing seat plates 4 of the drum support frame are provided with two at both ends of the drum shaft of the lifting drum 1. The upper ends of the two bearing seat plates 4 are fixedly connected by a cross-connecting plate 5. Generally, the cross-connecting plate 5 will be installed on the running trolley, and the drum support frame can ensure that the overall structure is firmly installed; a mounting hole for installing a fixed bearing 9 is provided in the center of the bearing seat plate 4; according to needs, a plurality of ribs 10 are evenly arranged on the outer plate surface of the bearing seat plate 4, which effectively increases the structural strength of the bearing seat plate 4; a protective retaining ring 3 is fixed around the outer plate surface of the bearing seat plate 4, and the protective retaining ring 3 can protect the cam-type rotation limiter 6, thereby reducing the risk of collision of the cam-type rotation limiter 6 during transportation and installation. In addition, the outer port of the protective retaining ring 3 is removably covered with a cover, which can also play a dust-proof effect after being closed; the cam type rotation limiter 6 is installed and fixed in the protective retaining ring 3. Specifically, the outer shell of the cam type rotation limiter 6 is fixed to the outer plate surface of the bearing seat plate 4 to ensure that the installation is stable and fixed; the input shaft of the cam type rotation limiter 6 is perpendicular to the corresponding shaft end of the cylinder shaft of the lifting drum 1, and the input shaft of the cam type rotation limiter 6 is coaxially fixed with a driven gear 7, and the corresponding shaft end of the cylinder shaft of the lifting drum 1 is coaxially fixed with an end face gear 8 that meshes with the driven gear 7. By setting the end face gear 8 and the driven gear 7 to mesh, the installation direction of the cam type rotation limiter 6 is changed, the installation length is shortened, and more space is left.

[0019] The electric hoist lifting limit installation structure described in the present invention is implemented by installing the input shaft of the cam-type rotary limiter 6 vertically corresponding to the corresponding shaft end of the cylinder shaft of the lifting drum 1, and utilizing the meshing of the end gear and the driven gear for transmission, thereby ensuring that the cam-type rotary limiter 6 can perform normal limiting work while shortening the installation length and improving the installation stability. The added protective retaining ring also further plays a safety protection role.

[0020] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. An electric hoist lifting limit installation structure, comprising a cam-type rotary limiter (6), a lifting drum (1) and a drum support frame, wherein both ends of the shaft of the lifting drum (1) are rotatably mounted on the drum support frame through bearings (9), and one end of the shaft of the lifting drum (1) is correspondingly connected to the input shaft end of the cam-type rotary limiter (6) in a transmission manner, wherein: The drum support frame includes a bearing seat plate (4), a mounting hole for mounting a fixed bearing (9) is provided in the center of the bearing seat plate (4), a protective retaining ring (3) is fixed around the outer plate surface of the bearing seat plate (4), the cam type rotation limiter (6) is installed and fixed in the protective retaining ring (3), and the input shaft of the cam type rotation limiter (6) is perpendicular to the corresponding shaft end of the cylinder shaft of the lifting drum (1), the input shaft of the cam type rotation limiter (6) is coaxially fixed with a driven gear (7), and the corresponding shaft end of the cylinder shaft of the lifting drum (1) is coaxially fixed with an end face gear (8) that meshes with the driven gear (7).

2. The electric hoist lifting limit installation structure according to claim 1 is characterized in that: The outer surface of the bearing seat plate (4) is evenly surrounded by a plurality of ribs (10).

3. The electric hoist lifting limit installation structure according to claim 1 is characterized in that: The outer shell of the cam-type rotation limiter (6) is fixed to the outer plate surface of the bearing seat plate (4).

4. The electric hoist lifting limit installation structure according to claim 1 is characterized in that: The outer port of the protective retaining ring (3) is detachably covered with a cover.

5. The electric hoist lifting limit installation structure according to claim 1 is characterized in that: The drum support frame is provided with two bearing seat plates (4) corresponding to the two ends of the drum shaft of the lifting drum (1), and the upper ends of the two bearing seat plates (4) are fixedly connected by a transverse connecting plate (5).

6. The electric hoist lifting limit installation structure according to claim 1 is characterized by: The lifting drum (1) is provided with lifting motors (2) spaced apart and arranged side by side, and the output shaft of the lifting motor (2) is correspondingly connected to the other end of the shaft of the lifting drum (1).

Images