Lifting appliance for assembling rotary kiln riding wheel bearing bush

Abstract

The utility model discloses a lifting appliance for assembling a riding wheel bearing bush of a rotary kiln, which belongs to the technical field of equipment assembly and comprises a door-frame-shaped lifting lug, the mounting end of the lifting lug is rotatably connected with a connecting frame, and the width size of the connecting frame is smaller than the inner diameter size of the mounting end of the lifting lug. The two ends of the connecting frame in the length direction are fixedly connected with two assembly sections of the bearing bush respectively; in the working state, external force is applied to the bearing bush so that the bearing bush can drive the connecting frame to rotate relative to the lifting lug, and when the bearing bush and the connecting frame rotate in the direction close to the lifting lug, the bearing bush and the connecting frame penetrate through the inner frame of the lifting lug; compared with traditional direct hoisting, the angle and posture adjustment of the bearing bush can be conveniently achieved in a labor-saving mode, the conditions such as collision and scratching of the bearing bush in the installation process are prevented, and the safety of the operation process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment assembly, in particular to a sling for assembling a trunnion bearing of a rotary kiln. Background Art

[0002] Due to transportation reasons, large rotating equipment needs to be assembled and stored at the construction site. This patent is a specially designed sling for on-site assembly of large bearings. Since the bearing shell is generally composed of two upper and lower parts or multiple symmetrically assembled parts, it needs to be rotated at multiple angles during on-site assembly to facilitate hoisting and positioning. In addition, the bearing shell of large equipment is heavy and has high requirements for the contact surface, and it needs to be stored protectively and hoisted on-site. However, the existing bearing shell assembly usually hoists the bearing shell to the designated position in sections to achieve assembly, but the correct installation posture of the bearing shell components cannot be guaranteed after hoisting, and the posture of the bearing shell needs to be adjusted subsequently, which may lead to low efficiency and increased construction costs. Summary of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, the technical problem to be solved by the utility model is: how to effectively improve the working conditions and the assembly efficiency of large bearings, and reduce the construction cost.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A sling for assembling a trunnion bearing of a rotary kiln includes a door-frame-shaped lifting lug. The mounting end of the lifting lug is rotatably connected with a connecting frame. The width dimension of the connecting frame is smaller than the inner diameter dimension of the mounting end of the lifting lug. Both ends in the length direction of the connecting frame are used for fixedly connecting two assembly sections of the bearing shell respectively; in the working state, an external force is applied to the bearing shell so that the bearing shell drives the connecting frame to rotate relative to the lifting lug. When the bearing shell and the connecting frame rotate towards the direction close to the lifting lug, the bearing shell and the connecting frame pass through the inner frame of the lifting lug.

[0006] Furthermore, a positioning frame is arranged on the connecting frame. A fixed rotating shaft is rotatably arranged on the positioning frame. Both ends of the opening side of the lifting lug are connected to the fixed rotating shaft. The positioning frame faces the inner wall direction of the bearing shell.

[0007] Furthermore, mounting holes are arranged at both ends in the length direction of the connecting frame. The sizes and positions of the mounting holes correspond to the sizes and positions of the mounting screw holes of the bearing shell.

[0008] Furthermore, both the lifting lug and the connecting frame are welded by a plurality of channel steels.

[0009] Furthermore, the lifting lug and the connecting frame are detachably connected.

[0010] The beneficial effects of the utility model are:

[0011] Through the rotational connection effect of the lifting lug and the connecting frame, and the connecting frame is connected to the bearing bush at the same time. When it is convenient to lift the bearing bush, by applying an external force, the connecting frame and the bearing bush can be rotated around the rotating shaft of the connecting frame to adjust the installation attitude of the bearing bush. In this way, compared with the traditional direct lifting, the angle and attitude of the bearing bush can be adjusted conveniently and labor-savingly, and the situation of collision and rubbing of the bearing bush during the installation process can be prevented, and the safety of the operation process can be improved. Description of the Drawings

[0012] Figure 1 is a schematic diagram of the rotatable sling and the bearing bush installation structure of the present utility model Figure 1 ;

[0013] Figure 2 is a schematic diagram of the rotatable sling and the bearing bush installation structure of the present utility model Figure 2 ;

[0014] Figure 3 is the front view of the rotatable sling of the present utility model;

[0015] Figure 4 is the left view of the rotatable sling of the present utility model;

[0016] Figure 5 is the top view of the rotatable sling of the present utility model;

[0017] Figure 6 is the schematic diagram of the assembly steps of the present utility model;

[0018] In the figure, the labels are: 1 - lifting lug, 2 - connecting frame, 3 - positioning frame, 4 - bearing bush body, 5 - fixed rotating shaft, 6 - mounting hole, 7 - bearing support, 8 - assembly section, 41 - first bearing bush, 42 - second bearing bush. Detailed Embodiment

[0019] The present utility model will be further described below with reference to the drawings.

[0020] As Figures 1-5 shown, an embodiment of the present application provides a sling for assembling a rotary kiln idler bearing bush, which includes a doorframe-shaped lifting lug 1. The mounting end of the lifting lug 1 is rotatably connected to a connecting frame 2. The width dimension of the connecting frame 2 is smaller than the inner diameter dimension of the mounting end of the lifting lug 1. The two ends in the length direction of the connecting frame 2 are respectively used for fixedly connecting the two assembly sections 8 of the bearing bush 4; in the working state, an external force is applied to the bearing bush 4 to make the bearing bush 4 drive the connecting frame 2 to rotate relative to the lifting lug 1. When the bearing bush 4 and the connecting frame 2 rotate towards the direction close to the lifting lug 1, the bearing bush 4 and the connecting frame 2 pass through the inner frame of the lifting lug 1.

[0021] First of all, it should be stated that through the rotational connection effect of the lifting lug 1 and the connecting frame 2, and at the same time, the connecting frame 2 is connected to the bearing bush 4. When it is convenient to lift the bearing bush 4, by applying an external force, the connecting frame 2 and the bearing bush 4 can rotate around the rotating shaft of the connecting frame 2, adjusting the installation posture of the bearing bush 4. In this way, compared with the traditional direct lifting, it can conveniently and labor-savingly adjust the angle and posture of the bearing bush 4, and prevent the bearing bush 4 from colliding and rubbing during the installation process, and improve the safety of the operation process.

[0022] The above-mentioned lifting lug 1 and the above-mentioned connecting frame 2 are both welded by multiple channel steels, and the material and processing costs are relatively low; the whole of the above-mentioned connecting frame 2 can also be a connecting plate, and the two ends of the connecting plate are respectively detachably connected to the two assembly sections 8 of the above-mentioned bearing bush 4. The rotational connection between the connecting frame 2 and the lifting lug 1 is realized by means of a rotating shaft and a shaft sleeve, so that the bearing bush 4 and the connecting frame 2 can realize rotational motion based on the rotating shaft. Generally, the bearing bush 4 is assembled into two semi-circular bearing bushes 4 for assembly. When a single bearing bush 4 is installed on the connecting frame 2, the rotation direction is to rotate along the circular axis of the bearing bush 4. During the rotation process, two lifting postures can be adjusted. One is that the two assembly sections 8 of the bearing bush 4 face upward, and the other is that the two assembly sections 8 of the bearing bush 4 face downward, which can ensure that the corresponding assembly state is directly adjusted during the hoisting in the actual assembly process and directly installed, improving the work efficiency. Further, the above-mentioned lifting lug 1 and the above-mentioned connecting frame 2 are detachably connected. After disassembly, the connecting frame 2 can be used as a placement bracket for the bearing bush 4 to prevent damage to the surface of the bearing bush 4 during the placement of the bracket.

[0023] The above-mentioned lifting lug 1 is in the shape of a door frame and the internal hollow size is larger than the overall size of the connecting frame 2 and the bearing bush 4, ensuring that during the overall rotation of the connecting frame 2 and the bearing bush 4, they can pass through the inside of the lifting lug 1, preventing the lifting lug 1 from interfering with and affecting the rotation of the bearing bush 4 and ensuring the smoothness of the working state.

[0024] Preferably, the connecting frame 2 is provided with a positioning frame 3, and a fixed rotating shaft 5 is rotatably arranged on the positioning frame 3. Both ends of the opening side of the above-mentioned lifting lug 1 are connected to the above-mentioned fixed rotating shaft 5, and the positioning frame 3 faces the inner wall direction of the bearing bush 4. That is to say, by extending the positioning frame 3 towards the inner wall direction of the bearing bush 4, it can be ensured that when the bearing bush 4 rotates with the connecting frame 2, the position of the fixed rotating shaft 5 is close to the geometric center position of the overall structure of the bearing bush 4 and the connecting frame 2, ensuring that the rotation radius of the bearing bush 4 is minimized and reducing the material used in the length direction of the lifting lug 1.

[0025] Moreover, mounting holes 6 are provided at both ends of the connecting frame 2 in the length direction. The dimensions and positions of the mounting holes 6 correspond to the dimensions and positions of the mounting screw holes of the bearing bush 4. That is to say, the detachable fixed connection between the connecting frame 2 and the bearing bush 4 is realized by means of bolt connection, which is more convenient for subsequent disassembly. Moreover, there is no need to provide another fixing structure on the bearing bush 4, and the screw holes on the assembly section 8 of the bearing bush 4 can be directly used, reducing costs.

[0026] As Figure 6 shown, the specific method for assembling the bearing bush of the lifting tool in this embodiment includes the following steps.

[0027] S1: First, place the bearing support 7 at the designated assembly position; after the bearing seat is placed at the designated position, it is convenient to determine the hoisting path and height, ensuring the smoothness of the entire assembly process.

[0028] S2: Fix the two assembly sections 8 of the first bearing bush 41 to both ends of the connecting frame 2 in the length direction, and connect the lifting lug 1 at the driving end of the crane to the end of the connecting frame 2 far from the first bearing bush 41; the bearing bushes involved in this embodiment are two semi-ring-shaped bearing bushes assembled symmetrically up and down. Therefore, the first bearing bush 41 is first lifted to a certain height by the crane and then its attitude is adjusted. Moreover, when carrying out the assembly activity in place, a layer of protective layer, usually a rubber pad, is laid at the designated position point. And the connection method for fixing the two assembly sections 8 of the first bearing bush 41 to both ends of the connecting frame 2 in the length direction is bolt fixing connection. Installation holes 6 adapted to the assembly section 8 can be directly opened on the connecting frame 2, avoiding setting other fixing structures on the second bearing bush 42. Moreover, the bolt structure has high connection stability and is convenient for installation and disassembly.

[0029] S3: After lifting the first bearing bush 41 to a certain height by the crane, use both hands or a manual hoist to turn the first bearing bush 41 until the two assembly sections 8 of the first bearing bush 41 face upward; by turning the first bearing bush 41 so that the two assembly sections 8 face upward and the outer wall of the first bearing bush 41 faces downward, it is ensured that the bearing bush can be stably installed at the position of the bearing support 7, and the angle and position do not need to be adjusted during the installation process, effectively improving the assembly efficiency.

[0030] S4: Position the turned first bearing bush 41 at the upper installation position of the bearing support 7 by the crane, and then disconnect the first bearing bush 41 and the connecting frame 2 at this time; after determining the hoisting position, disconnect the first bearing bush 41 and the connecting frame 2 to ensure that the outer wall of the first bearing bush 41 can be accurately embedded in the installation position of the bearing support 7.

[0031] S5: After the first bearing bush 41 is in place, install the lining, bearing and shaft in sequence.

[0032] S6: Fix the two assembly sections 8 of the second bearing shell 42 to the two ends in the length direction of the connecting frame 2, and lift the second bearing shell 42 to a certain height by a crane; at the same time, hoist the second bearing shell 42. Moreover, when carrying out the assembly activity in place, first lay a protective layer at the designated position point, which can generally be a rubber pad. And the connection method of fixing the two assembly sections 8 of the second bearing shell 42 to the two ends in the length direction of the connecting frame 2 is bolted connection. Installation holes 6 adapted to the assembly sections 8 can be directly opened on the connecting frame 2, avoiding setting other fixing structures on the second bearing shell 42. Moreover, the bolt structure has high connection stability and is convenient for installation and disassembly.

[0033] S7: Use both hands or a chain block to turn the second bearing shell 42 until the two assembly sections 8 of the second bearing shell 42 face downward; at this time, the two assembly sections 8 of the second bearing shell 42 are vertically downward.

[0034] S8: After driving the turned second bearing shell 42 to move above the first bearing shell 41 by a crane, drive the second bearing shell 42 to move downward. When the two assembly sections 8 of the second bearing shell 42 are opposite to the two assembly sections 8 of the first bearing shell 41 and have a certain distance, disconnect the second bearing shell 42 and the connecting frame 2 at this time. The two assembly sections 8 of the second bearing shell 42 and the two assembly sections 8 of the first bearing shell 41 are respectively in contact and fixedly assembled. Moreover, during the process, it is not necessary to make a large number of adjustments to the positions and angles of the first bearing shell 41 and the second bearing shell 42, improving the work efficiency and safety.

[0035] In summary, the present utility model provides a lifting tool for the assembly of a rotary kiln supporting roller bearing shell, including a door frame-shaped lifting lug 1. The mounting end of the lifting lug 1 is rotatably connected with a connecting frame 2. The width dimension of the connecting frame 2 is smaller than the inner diameter dimension of the mounting end of the lifting lug 1. The two ends in the length direction of the connecting frame 2 are respectively used for fixedly connecting the two assembly sections 8 of the bearing shell 4; in the working state, an external force is applied to the bearing shell so that the bearing shell 4 drives the connecting frame 2 to rotate relative to the lifting lug 1. When the bearing shell 4 and the connecting frame 2 rotate towards the direction close to the lifting lug 1, the bearing shell 4 and the connecting frame 2 pass through the inner frame of the lifting lug 1. The lifting tool provided by the present utility model is convenient to operate, can effectively improve the working conditions and the assembly operation efficiency of large bearing shells, protect the joint surface of the bearing shell from damage, and reduce the construction cost.

Claims

1. The lifting device for assembling the bearing bush of the rotary kiln is characterized by: It comprises a door frame-shaped lifting ear, the mounting end of the lifting ear is rotatably connected with a connecting frame, the width dimension of the connecting frame is smaller than the inner diameter dimension of the mounting end of the lifting ear, and the two ends of the connecting frame in the length direction are used to respectively fix two assembly sections of the connecting bearing shell; in the working state, an external force is applied to the bearing shell so that the bearing shell drives the connecting frame to rotate relative to the lifting ear, and when the bearing shell and the connecting frame rotate toward the lifting ear, the bearing shell and the connecting frame pass through the inner frame of the lifting ear.

2. The rotary kiln support wheel bearing assembly hanger according to claim 1, characterized in that: The connecting frame is provided with a positioning frame, and the positioning frame is rotatably provided with a fixed rotating shaft. Both ends of the opening side of the lifting ear are connected to the fixed rotating shaft, and the positioning frame faces the inner wall direction of the bearing shell.

3. The rotary kiln support wheel bearing assembly hanger according to claim 1, characterized in that: Both ends of the connecting frame in the length direction are provided with mounting holes, and the size and position of the mounting holes correspond to the size and position of the bearing bush mounting screw holes.

4. The rotary kiln support wheel bearing assembly hanger according to claim 1, characterized in that: The lifting lugs and the connecting frame are both formed by welding a plurality of channel steels.

5. The rotary kiln support wheel bearing assembly hanger according to claim 1, characterized in that: The lifting ear is detachably connected to the connecting frame.

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