Connecting device for box body and top cover of box-type motor

Abstract

The utility model discloses a connecting device for a box body and a top cover of a box type motor, which comprises a bottom shell, the top cover, bottom connecting pieces, butt joint bolts, top connecting pieces, limiting sleeves and auxiliary supporting assemblies, a square table is arranged at the bottom of the top cover, the square table is attached to the top of the bottom shell, and the bottom connecting pieces are symmetrically arranged at the tops of the side walls of the bottom shell; according to the connecting structure of the bottom shell and the top cover, the bottom connecting piece and the top connecting piece are placed on the bottom shell and the top cover respectively to be connected with the butt-joint bolt, the butt-joint bolt is fixed through the fixing nut, and the limiting sleeve is tightly pressed between the bottom connecting piece and the top connecting piece, so that the connecting structure of the bottom shell and the top cover is formed. On the basis of not changing the overall structure of the box-type motor, the safety problems of unstable connection between the bottom shell and the top cover of the box-type motor, fracture of connecting screws, large vibration of the motor and the like are solved; and the auxiliary supporting assembly elastically supports and limits the top cover when the bottom shell is connected with the top cover, so that a worker can conveniently assemble and fix the top cover.

Description

Technical Field

[0001] The utility model relates to the technical field of box-type motor case connection, in particular to a connection device between a box-type motor case and a top cover. Background Art

[0002] Large motors are a type of electric motors with high power and large size. They are widely used in various industrial fields, such as steel, electricity, petroleum, chemical industry, cement, mining, etc. They are generally large in power and can meet the driving needs of various high-power equipment. Due to the rapid development of manufacturing, metallurgy, energy and electricity and other industries, the use of large motors has become a common phenomenon. At present, the connection method between the box body and the top cover of most box-type motors is still in the stage of directly punching holes and fixing them with bolts on the main body of the box-type structure. This direct connection method will produce excessive shear force when encountering large load changes, resulting in lateral breakage of the fixing screws, increased vibration of the top cover and the body, and major safety hazards to the operation of the equipment. Therefore, it is very necessary to design a connection device between the box body and the top cover of the box-type motor to solve the safety problems of unstable connection between the bottom shell and the top cover of the box-type motor, broken connecting screws, and large motor vibration without changing the overall structure of the box-type motor. Utility Model Content

[0003] The purpose of the utility model is to provide a connecting device between a box-type motor case and a top cover, so as to solve the problem that the connection method between the box-type motor case and the top cover is still at the stage of directly punching holes and inserting bolts on the main body of the box-type structure to fix it. When encountering a situation where the load changes are relatively large, this direct connection method will generate excessive shear force, resulting in lateral breakage of the fixing screws, increased vibration of the top cover and the main body, and a major safety hazard to the operation of the equipment.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a connecting device between a box-type motor case and a top cover, comprising a bottom shell, a top cover, a square platform, a bottom connecting piece, a butt bolt, a fixing nut, a top connecting piece, a limiting sleeve and an auxiliary support assembly, wherein a square platform is provided at the bottom of the top cover, and the square platform is attached to the top of the bottom shell, and a bottom connecting piece is symmetrically provided at the top of the side wall of the bottom shell, a butt bolt is sleeved in a through hole opened in the bottom connecting piece, a fixing nut is connected to the top of the butt bolt through a threaded fit, the bottom of the fixing nut is tightly pressed on the top connecting piece, and the top connecting piece is welded and fixed to the bottom of the outer wall of the top cover; connecting blocks in the auxiliary support assembly are symmetrically provided on both sides of the bottom of the square platform, a limiting top block is sleeved in a groove opened in the bottom of the connecting block, a first spring is provided at the bottom of the limiting top block, and the bottom end of the first spring is fixed on the lifting platform.

[0005] As a further technical solution of the utility model, a limiting sleeve is sleeved on the butt bolt, and the bottom and top of the limiting sleeve are respectively fitted on the bottom connecting piece and the top connecting piece.

[0006] As a further technical solution of the utility model, the auxiliary support assembly is composed of a connecting block, a limiting top block, a first spring, a first guide rod, a lifting platform, a second guide rod, a second spring, a support block, a slider, a guide rail, a lead screw and a bottom motor. The first guide rod is slidably connected to the through hole opened at the top center of the lifting platform. The first guide rod is located inside the first spring, and the top end of the first guide rod is fixed to the bottom of the limiting top block.

[0007] As a further technical solution of the utility model, sliding blocks are symmetrically arranged at the bottom of the lifting platform, the sliding blocks are slidably connected to guide rails, and the guide rails are symmetrically installed on the bottom shell.

[0008] As a further technical solution of the utility model, the lifting platform is connected to the lead screw through an internally embedded ball nut, the lead screw is connected to the output end of the bottom motor, and the bottom motor is symmetrically installed on the bottom shell.

[0009] As a further technical solution of the utility model, a second spring is symmetrically arranged on the lifting platform, one end of the second spring is fixed on the support block, and the support block is slidably connected to the limit top block.

[0010] As a further technical solution of the utility model, a second guide rod is provided on the support block, the second guide rod is located inside the second spring, and the second guide rod is slidably connected to a through hole opened on the lifting platform.

[0011] The utility model provides a connecting device for a box-type motor case and a top cover, which has the advantages that: a bottom connecting piece and a top connecting piece are respectively placed on the bottom shell and the top cover to connect the butt bolts, and the butt bolts are fixed by fixing nuts and the limiting sleeve is pressed tightly between the bottom connecting piece and the top connecting piece, thereby forming a connecting structure between the bottom shell and the top cover, and solving the safety problems such as unstable connection between the box-type motor case and the top cover, broken connecting screws, and large motor vibration without changing the overall structure of the box-type motor; at the same time, a first spring and a second spring are used on the lifting platform to respectively support the limiting top block and the supporting block, and before the bottom shell and the top cover are connected, the connecting block on the top cover is elastically supported and limited, thereby avoiding deflection caused by the butt connection between the bottom shell and the top cover, and facilitating assembly and fixing by staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a three-dimensional diagram of the local structure of the utility model;

[0015] Figure 3 for Figure 2 A partial enlarged view of the middle A area;

[0016] Figure 4 for Figure 2 A partial enlarged view of area B.

[0017] In the figure: 1. bottom shell; 2. top cover; 3. square table; 4. bottom connecting piece; 5. docking bolt; 6. fixing nut; 7. top connecting piece; 8. limiting sleeve; 9. auxiliary support assembly; 91. connecting block; 92. limiting top block; 93. first spring; 94. first guide rod; 95. lifting platform; 96. second guide rod; 97. second spring; 98. support block; 99. slider; 100. guide rail; 101. lead screw; 102. bottom motor. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Please see attached Figure 1 -Attached Figure 4 The utility model provides an embodiment: a connecting device of a box-type motor case and a top cover, comprising a bottom shell 1, a top cover 2, a square platform 3, a bottom connecting piece 4, a butt bolt 5, a fixing nut 6, a top connecting piece 7, a limiting sleeve 8 and an auxiliary support assembly 9. The bottom of the top cover 2 is provided with a square platform 3, and the square platform 3 is attached to the top of the bottom shell 1. The top of the side wall of the bottom shell 1 is symmetrically provided with a bottom connecting piece 4. The through hole opened in the bottom connecting piece 4 is sleeved with a butt bolt 5. The top of the butt bolt 5 is connected with a fixing nut 6 through threaded cooperation. The bottom of the fixing nut 6 is pressed tightly on the top connecting piece 7. The top connecting piece 7 is welded and fixed to the bottom of the outer wall of the top cover 2; the square platform 3 The bottom two sides of the auxiliary support assembly 9 are symmetrically provided with connecting blocks 91, the grooves at the bottom of the connecting blocks 91 are matched with the limit top blocks 92, the bottom of the limit top blocks 92 is provided with a first spring 93, and the bottom end of the first spring 93 is fixed on the lifting platform 95; the limiting sleeve 8 is sleeved on the docking bolt 5, and the bottom and top of the limiting sleeve 8 are respectively attached to the bottom connecting piece 4 and the top connecting piece 7; the auxiliary support assembly 9 is composed of a connecting block 91, a limit top block 92, a first spring 93, a first guide rod 94, a lifting platform 95, a second guide rod 96, a second spring 97, a support block 98, a slider 99, a guide rail 100, a lead screw 101 and a bottom motor 102. A first guide rod 94 is slidably connected in a through hole opened at the center of the top of the lifting platform 95. The first guide rod 94 is located inside the first spring 93, and the top end of the first guide rod 94 is fixed to the bottom of the limit top block 92; a slider 99 is symmetrically arranged at the bottom of the lifting platform 95, and the slider 99 is slidably connected to the guide rail 100, and the guide rail 100 is symmetrically installed on the bottom shell 1; the lifting platform 95 is connected to the lead screw 101 through an internally embedded ball nut, and the lead screw 101 is connected to the output end of the bottom motor 102, and the bottom motor 102 is symmetrically installed on the bottom shell 1; a second spring 97 is symmetrically arranged on the lifting platform 95, and one end of the second spring 97 is fixed to the support block 98 , the support block 98 is slidably connected to the limit top block 92; a second guide rod 96 is provided on the support block 98, and the second guide rod 96 is located inside the second spring 97. The second guide rod 96 is slidably connected to the through hole opened on the lifting platform 95, and the bottom motor 102 is used to drive the lead screw 101 to rotate, and then the lead screw 101 and the ball nut embedded and installed inside the lifting platform 95 are used to make the lifting platform 95 move up and down along the guide rail 100, thereby adjusting the support strength of the lifting platform 95 on the connecting block 91. At the same time, after the bottom shell 1 and the top cover 2 are docked, the lead screw 101 is driven by the bottom motor 102 to drive the lifting platform 95 to move downward, so that the limit top block 92 and the support block 98 are separated from the connecting block 91;

[0021] Specifically, when in use, the butt bolts 5 are connected by placing the bottom connecting piece 4 and the top connecting piece 7 on the bottom shell 1 and the top cover 2 respectively, and the butt bolts 5 are fixed by the fixing nut 6 and the limiting sleeve 8 is pressed tightly between the bottom connecting piece 4 and the top connecting piece 7, thereby forming a connection structure between the bottom shell 1 and the top cover 2, and solving the safety problems such as unstable connection between the bottom shell 1 and the top cover 2 of the box-type motor, broken connecting screws, and large motor vibration without changing the overall structure of the box-type motor; at the same time, by using the first spring 93 and the second spring 97 on the lifting platform 95 to respectively support the limiting top block 92 and the supporting block 98, before the bottom shell 1 is connected to the top cover 2, the connecting block 91 on the top cover 2 is elastically supported and limited, so as to avoid deflection caused by the docking of the bottom shell 1 and the top cover 2, and facilitate the staff to assemble and fix.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A device for connecting a box-type motor housing and a top cover, comprising a bottom shell (1), a top cover (2), a square platform (3), a bottom connecting piece (4), a butt bolt (5), a fixing nut (6), a top connecting piece (7), a limiting sleeve (8) and an auxiliary support assembly (9), characterized in that: The bottom of the top cover (2) is provided with a square platform (3), and the square platform (3) is fitted on the top of the bottom shell (1). The top of the side wall of the bottom shell (1) is symmetrically provided with a bottom connecting piece (4), a butt bolt (5) is sleeved in a through hole provided in the bottom connecting piece (4), a fixing nut (6) is connected to the top of the butt bolt (5) through a threaded fit, the bottom of the fixing nut (6) is tightly pressed on the top connecting piece (7), and the top connecting piece (7) is welded and fixed to the bottom of the outer wall of the top cover (2); connecting blocks (91) in the auxiliary support assembly (9) are symmetrically provided on both sides of the bottom of the square platform (3), a limited top block (92) is sleeved in a groove provided in the bottom of the connecting block (91), a first spring (93) is provided at the bottom of the limited top block (92), and the bottom end of the first spring (93) is fixed on the lifting platform (95).

2. The device for connecting a box-type motor housing and a top cover according to claim 1, characterized in that: A limiting sleeve (8) is sleeved on the butt bolt (5), and the bottom and top of the limiting sleeve (8) are respectively fitted on the bottom connecting piece (4) and the top connecting piece (7).

3. The device for connecting a box-type motor housing and a top cover according to claim 1, characterized in that: The auxiliary support assembly (9) is composed of a connecting block (91), a limiting top block (92), a first spring (93), a first guide rod (94), a lifting platform (95), a second guide rod (96), a second spring (97), a support block (98), a slider (99), a guide rail (100), a lead screw (101) and a bottom motor (102). The first guide rod (94) is slidably connected to a through hole opened at the center of the top of the lifting platform (95). The first guide rod (94) is located inside the first spring (93), and the top end of the first guide rod (94) is fixed to the bottom of the limiting top block (92).

4. The device for connecting a box-type motor housing and a top cover according to claim 3, characterized in that: The bottom of the lifting platform (95) is symmetrically provided with sliders (99), the sliders (99) are slidably connected to guide rails (100), and the guide rails (100) are symmetrically mounted on the bottom shell (1).

5. The device for connecting a box-type motor housing and a top cover according to claim 4, characterized in that: The lifting platform (95) is connected to the lead screw (101) through an internally embedded ball nut, and the lead screw (101) is connected to the output end of the bottom motor (102), and the bottom motor (102) is symmetrically installed on the bottom shell (1).

6. The device for connecting a box-type motor housing and a top cover according to claim 5, characterized in that: A second spring (97) is symmetrically arranged on the lifting platform (95), one end of the second spring (97) is fixed on a support block (98), and the support block (98) is slidably connected to the limit top block (92).

7. The device for connecting a box-type motor housing and a top cover according to claim 6, characterized in that: The support block (98) is provided with a second guide rod (96), the second guide rod (96) is located inside the second spring (97), and the second guide rod (96) is slidably connected to a through hole opened on the lifting platform (95).

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