Plastic gearbox cover mounting structure

Abstract

The utility model relates to the technical field of plastic gear boxes, in particular to a plastic gear box cover mounting structure which comprises a base, two symmetrically-distributed mounting holes are formed in the left side of the upper end of the base, and a gear box body is fixedly connected to the upper end of the base. The sealing ring is pushed to make contact with the box cover body, the connecting piece is connected to the outer side of the fixing rod in a sleeved mode, under the action of the inserting plate, the fixing rod can be limited, then the sealing ring is placed stably, and the subsequent extrusion sealing performance between the sealing ring and the gearbox body and between the sealing ring and the box cover body is guaranteed; through the arrangement of the first bolt, the second bolt and other structures, locking treatment can be conducted between the box cover body and the gear box body, under the spring, the movable plate, the square block and other structures, the second bolt can be limited, the problem that the second bolt is vibrated and loosened is solved, and the installation stability between the box cover body and the gear box body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic gearboxes, in particular to an installation structure of a plastic gearbox cover. Background Art

[0002] A plastic gearbox is a gear transmission device made of plastic materials, used for transmitting power and controlling mechanical motion. Plastic gearboxes are usually used in some mechanical transmission systems with light loads, low speeds, low noise, and no corrosion. They are usually assembled and formed by a housing and a housing cover.

[0003] In the utility model patent with the patent authorization announcement number CN211501569U, a plastic housing reduction gearbox structure is disclosed, including a housing plate, a bottom plate cover, and an output shaft. A large shaft sleeve is provided on the housing plate, and baffles for gearbox installation are provided around the housing plate. The housing plate, the large shaft sleeve, and the baffles are integrally injection-molded structures; a small shaft sleeve is provided at the bottom end of the bottom plate cover, and the bottom plate cover and the small shaft sleeve are integrally injection-molded structures; the output shaft is fixedly installed through the large shaft sleeve and the small shaft sleeve, and receives the power transmission of the motor through a gear set; both the housing plate and the bottom plate cover are made of plastic materials, and the housing plate is arranged at the top of the bottom plate cover, and the two are fixedly connected by welding.

[0004] However, there are also certain deficiencies in the existing installation structure of the plastic gearbox cover. Although the existing installation structure of the plastic gearbox cover is assembled and fixed using bolts, due to the influence of factors such as vibration, the problem of vibration and thread loosening of the bolts will occur after long-term use. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a plastic gearbox cover installation structure is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A plastic gearbox cover installation structure includes a base. Two symmetrically distributed installation holes are opened on the left side of the upper end of the base. A gearbox body is fixedly connected to the upper end of the base. A cover body is in contact with the front side of the gearbox body at the upper end of the base. The cover body is in contact with the gearbox body. A gear shaft is arranged in the middle of the right side of the cover body. An oil injection port is arranged on the upper side of the gearbox body. An installation mechanism is jointly arranged on the gearbox body and the cover body.

[0008] In addition, a preferred structure is that the installation mechanism includes a first fixing ear. The first fixing ear is fixedly connected to the left side of the gearbox body. The second fixing ear is fixedly connected to the left side of the cover body. A first nut is fixedly connected to the back of the first fixing ear. A first bolt is movably connected inside the second fixing ear and the first fixing ear. The first bolt is threadedly connected to the first nut. A third fixing ear is fixedly connected to the right side of the gearbox body. A fourth fixing ear is fixedly connected to the right side of the cover body. The fourth fixing ear is in contact with the third fixing ear. A second nut is fixedly connected to the back of the third fixing ear. A second bolt is movably connected inside the fourth fixing ear and the third fixing ear. The second bolt is threadedly connected to the second nut. By using the cooperation of structures such as the first bolt and the second bolt, the first fixing ear, the second fixing ear, the third fixing ear, and the fourth fixing ear can be locked, and then the cover body and the gearbox body can be locked and used.

[0009] In addition, a preferred structure is that a guide rod is fixedly connected inside the cover body. An end plate is fixedly connected to the front of the guide rod. A moving plate is slidably connected to the outside of the guide rod. The moving plate is slidably connected to the cover body. The moving plate is in contact with the second bolt. A spring is arranged on the outside of the guide rod. A square block is fixedly connected to the back of the moving plate. The square block is slidably connected to the second bolt. By setting structures such as the moving plate, the square block, and the spring, the second bolt can be inserted to avoid the problem of the second bolt vibrating and loosening.

[0010] In addition, a preferred structure is that a sealing ring is in contact with the back of the cover body. A fixing rod is fixedly connected to the back of the cover body. A connecting piece is slidably sleeved on the outside of the fixing rod. The connecting piece is fixedly connected to the sealing ring. An elastic piece is bonded to the back of the connecting piece. By the action of structures such as the fixing rod and the connecting piece, the sealing ring can be limited, the installation stability of the sealing ring can be improved, and the subsequent extrusion sealing effect can be ensured.

[0011] In addition, a preferred structure is that one end of the spring is welded to the moving plate, and the other end of the spring is welded to the end plate. By setting the spring, the moving plate can be pressed tightly.

[0012] In addition, a preferred structure is that an insertion plate is bonded to the other end of the elastic piece. The insertion plate is slidably connected to the fixing rod. By setting the insertion plate, the fixing rod can be inserted.

[0013] The beneficial effects of the present utility model are as follows: By pushing the sealing ring into contact with the box cover body, the connecting piece is sleeved on the outer side of the fixing rod. Under the action of the insertion plate, the fixing rod can be limited, so that the sealing ring is stably placed, ensuring the subsequent extrusion sealing performance between the sealing ring, the gearbox body and the box cover body. Through the arrangement of structures such as bolt one and bolt two, the box cover body and the gearbox body can be locked. Under the structures of the spring, the moving plate, the square block, etc., the bolt two can be limited to avoid the problem of loosening due to oscillation of the bolt two, so as to ensure the stability of the installation between the box cover body and the gearbox body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. is a three-dimensional view of the overall structure of an installation structure of a plastic gearbox cover proposed by the present utility model;

[0015] Figure 2 An installation structure of a plastic gearbox cover proposed by the present utility model Figure 1 of the side three-dimensional view;

[0016] Figure 3 An installation structure of a plastic gearbox cover proposed by the present utility model Figure 1 of the rear three-dimensional view except for the gearbox body;

[0017] Figure 4 An installation structure of a plastic gearbox cover proposed by the present utility model Figure 2 of the fixing ear three three-dimensional view,

[0018] Figure 5 An installation structure of a plastic gearbox cover proposed by the present utility model Figure 3 of the sealing ring three-dimensional view.

[0019] In the figure: 1, base; 2, mounting hole; 3, gearbox body; 4, box cover body; 5, gear shaft; 6, oil filling port; 7, installation mechanism; 71, fixing ear one; 72, fixing ear two; 73, nut one; 74, bolt one; 75, fixing ear three; 76, fixing ear four; 77, nut two; 78, bolt two; 79, guide rod; 790, end plate; 791, moving plate; 792, spring; 793, square block; 794, sealing ring; 795, fixing rod; 796, connecting piece; 797, elastic piece; 798, insertion plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] Referring to Figure 1 、Figure 2 , Figure 3 , Figure 4 , Figure 5 , a mounting structure for a plastic gearbox cover, comprising a base 1, two symmetrically distributed mounting holes 2 are opened on the left side of the upper end of the base 1, a gearbox body 3 is fixedly connected to the upper end of the base 1, a cover body 4 is in contact with the front side of the gearbox body 3 at the upper end of the base 1, the cover body 4 is in contact with the gearbox body 3, a gear shaft 5 is arranged in the middle of the right side of the cover body 4, and an oil filling port 6 is arranged on the upper side of the gearbox body 3.

[0022] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , a mounting mechanism 7 is jointly arranged on the gearbox body 3 and the cover body 4. The mounting mechanism 7 includes a first fixing ear 71, the first fixing ear 71 is fixedly connected to the left side of the gearbox body 3, a second fixing ear 72 is fixedly connected to the left side of the cover body 4, a first nut 73 is fixedly connected to the back of the first fixing ear 71, a first bolt 74 is jointly movably connected inside the second fixing ear 72 and the first fixing ear 71, and the first bolt 74 is threadedly connected to the first nut 73. A third fixing ear 75 is fixedly connected to the right side of the gearbox body 3, a fourth fixing ear 76 is fixedly connected to the right side of the cover body 4, the fourth fixing ear 76 is in contact with the third fixing ear 75, a second nut 77 is fixedly connected to the back of the third fixing ear 75, a second bolt 78 is jointly movably connected inside the fourth fixing ear 76 and the third fixing ear 75, and the second bolt 78 is threadedly connected to the second nut 77. By the combined use of structures such as the first bolt 74 and the second bolt 78, the first fixing ear 71, the second fixing ear 72 and the third fixing ear 75, the fourth fixing ear 76 can be locked, and then the cover body 4 and the gearbox body 3 can be locked for use.

[0023] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , a guide rod 79 is fixedly connected inside the cover body 4, an end plate 790 is fixedly connected to the front of the guide rod 79, a moving plate 791 is slidably connected to the outside of the guide rod 79, the moving plate 791 is slidably connected to the cover body 4, the moving plate 791 is in contact with the second bolt 78, a spring 792 is arranged on the outside of the guide rod 79, one end of the spring 792 is welded to the moving plate 791, and the other end of the spring 792 is welded to the end plate 790. Through the arrangement of the spring 792, the moving plate 791 can be tightly pressed for use. A square block 793 is fixedly connected to the back of the moving plate 791, and the square block 793 is slidably connected to the second bolt 78. Through the arrangement of structures such as the moving plate 791, the square block 793 and the spring 792, the second bolt 78 can be inserted to avoid the problem of vibration and wire loosening of the second bolt 78.

[0024] Refer toFigure 1 , Figure 2 , Figure 3 , Figure 5 , a sealing ring 794 is in contact with the back surface of the box cover body 4. A fixing rod 795 is fixedly connected to the back surface of the box cover body 4. A connecting piece 796 is slidably sleeved on the outer side of the fixing rod 795. The connecting piece 796 is fixedly connected to the sealing ring 794. An elastic piece 797 is adhesively bonded to the back surface of the connecting piece 796. The other end of the elastic piece 797 is adhesively bonded to a plug board 798. The plug board 798 is slidably connected to the fixing rod 795. Through the arrangement of the plug board 798, the fixing rod 795 can be inserted. Through the action of structures such as the fixing rod 795 and the connecting piece 796, the sealing ring 794 can be limited, improving the installation stability of the sealing ring 794, and further ensuring the subsequent extrusion sealing effect.

[0025] The specific implementation process of the present utility model is as follows: During use, by pushing the sealing ring 794 to contact the box cover body 4, the connecting piece 796 is driven to be sleeved on the outer side of the fixing rod 795, and the connecting piece 796 is made to contact the box cover body 4. Then, the plug board 798 is pushed through the fixing rod 795 to limit the connecting piece 796, improving the placement stability of the sealing ring 794, and further improving the subsequent assembly stability effect with the gearbox body 3 to ensure the extrusion sealing performance of the sealing ring 794;

[0026] By pulling the moving plate 791 in the direction close to the end plate 790, the spring 792 deforms and drives the square block 793 to move. Then, the box cover body 4 is pushed to contact the gearbox body 3, making the first fixing ear 71 contact the second fixing ear 72, and the third fixing ear 75 and the fourth fixing ear 76 contact. First, the first bolt 74 is pushed through the first fixing ear 71 and the second fixing ear 72, making the first bolt 74 contact the first nut 73. The first bolt 74 is rotated to make the first bolt 74 perform a threaded movement, thereby fixing the first bolt 74 and locking the first fixing ear 71 and the second fixing ear 72;

[0027] Then, the second bolt 78 is pushed through the third fixing ear 75 and the fourth fixing ear 76, making the second bolt 78 contact the second nut 77. The second bolt 78 is rotated to lock the third fixing ear 75 and the fourth fixing ear 76, and further lock between the box cover body 4 and the gearbox body 3;

[0028] Then, the moving plate 791 is released to make the spring 792 recover its deformation, so as to push the moving plate 791 to contact the second bolt 78 and drive the square block 793 to insert into the second bolt 78 to limit the second bolt 78 by insertion, avoiding the loosening and stability of the second bolt 78 due to vibration, and ensuring the installation stability effect between the box cover body 4 and the gearbox body 3.

[0029] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A plastic gear box cover mounting structure, comprising a base (1), characterized in that: The left side of the upper end of the base (1) is provided with two symmetrically distributed mounting holes (2); the upper end of the base (1) is fixedly connected to a gear box body (3); the upper end of the base (1) and the front side of the gear box body (3) are in contact with a box cover body (4); the box cover body (4) is in contact with the gear box body (3); a gear shaft (5) is provided in the middle of the right side of the box cover body (4); an oil filling port (6) is provided on the upper side of the gear box body (3); and a mounting mechanism (7) is provided on the gear box body (3) and the box cover body (4).

2. A plastic gear box cover mounting structure according to claim 1, characterized in that: The mounting mechanism (7) comprises a fixing ear (71), the left side of the gear box body (3) is fixedly connected with the fixing ear (71), the left side of the box cover body (4) is fixedly connected with the fixing ear (72), the back side of the fixing ear (71) is fixedly connected with a nut (73), the inside of the fixing ear (72) and the fixing ear (71) are movably connected with a bolt (74), the bolt (74) is connected to the nut (73) by a thread, and the fixing ear (72) and the fixing ear (71) are fixedly connected with each other. The right side of the gear box body (3) is fixedly connected with a fixing ear three (75), and the right side of the box cover body (4) is fixedly connected with a fixing ear four (76), the fixing ear four (76) is in contact with the fixing ear three (75), the back side of the fixing ear three (75) is fixedly connected with a nut two (77), the fixing ear four (76) and the fixing ear three (75) are internally connected with a bolt two (78) that is movably connected together, and the bolt two (78) is connected to the nut two (77) by threads.

3. A plastic gear box cover mounting structure according to claim 2, characterized in that: A guide rod (79) is fixedly connected to the inside of the box cover body (4), an end plate (790) is fixedly connected to the front of the guide rod (79), a movable plate (791) is slidably connected to the outside of the guide rod (79), the movable plate (791) is slidably connected to the box cover body (4), the movable plate (791) is in contact with the second bolt (78), a spring (792) is provided on the outside of the guide rod (79), a block (793) is fixedly connected to the back of the movable plate (791), and the block (793) is slidably connected to the second bolt (78).

4. The plastic gear box cover mounting structure according to claim 1, characterized in that: The back side of the box cover body (4) contacts with a sealing ring (794), the back side of the box cover body (4) is fixedly connected with a fixing rod (795), the outer side of the fixing rod (795) is slidably sleeved with a connecting piece (796), the connecting piece (796) is fixedly connected to the sealing ring (794), and the back side of the connecting piece (796) is bonded with an elastic piece (797).

5. The plastic gear box cover mounting structure according to claim 3, characterized in that: One end of the spring (792) is welded to the moving plate (791), and the other end of the spring (792) is welded to the end plate (790).

6. A plastic gear box cover mounting structure according to claim 4, characterized in that: The other end of the elastic sheet (797) is bonded with an inserting plate (798), and the inserting plate (798) is slidably connected to the fixing rod (795).

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