Worm gear reducer convenient to disassemble and assemble

Abstract

The worm gear reducer convenient to disassemble and assemble comprises a reducer body and an installation shell arranged on the outer side of the reducer body, an installation cover is hinged to one side of the upper end of the installation shell, the installation cover is connected with the installation shell through a plurality of limiting pieces, and when the reducer body needs to be maintained or overhauled, a limiting rod is pressed downwards, and the installation cover is connected with the installation shell through a plurality of limiting pieces. The bottom end of the limiting rod exerts pressure on the spring and compresses the spring, the limiting blocks on the two sides of the limiting rod slide out of the limiting groove and are attached to the bottom side of the circular groove, the limiting rod is rotated, the limiting blocks rotate in the circular groove, and due to the fact that the circular groove is communicated with the second through hole, the limiting blocks are clamped into the first through hole after rotating by a certain angle; when the installation shell and the installation cover are installed, the installation shell is ejected out of the first through hole under the thrust applied by the spring, at the moment, the limiting rod can be pulled out of the first through hole and the second through hole, the limiting rod does not limit the installation shell and the installation cover, the installation cover can be opened from the installation shell, the installation shell and the installation cover can be separated conveniently through the structure, and the maintenance difficulty of equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the field of worm gear reducers, in particular to a worm gear reducer which is easy to disassemble and assemble. Background Art

[0002] The worm gear reducer is a power transmission mechanism. It uses a gear speed converter to reduce the number of revolutions of the motor to the desired number of revolutions and obtain a larger torque. Its working principle is to drive the worm wheel to rotate through the rotation of the worm to achieve the transmission effect of reducing speed and increasing torque. The advantages of the worm gear reducer include smooth transmission, low noise, and large load capacity, which makes it perform well in various mechanical equipment. At the same time, due to its compact structure, it is also often used in places with limited space, such as machine tools, medical equipment, etc.

[0003] The existing worm gear reducer includes a mounting shell, a mounting cover, a worm wheel and a worm, and the top side of the worm is meshed with the bottom side of the worm wheel. The semicircular grooves on the opposite sides of the mounting shell and the mounting cover are spliced ​​into two upper mounting openings. Two lower mounting openings are respectively opened on the opposite sides of the mounting shell. The left and right ends of the worm and the front and rear sides of the worm wheel are respectively arranged in four balls respectively fixedly arranged on the inner side walls of the two lower mounting openings and the two upper mounting openings. The left end of the worm and the central area of ​​the front side wall of the worm wheel are respectively provided with an input shaft and an output shaft, and the input shaft and the output shaft extend out of the mounting shell through the lower mounting opening and the upper mounting opening respectively. When the worm gear reducer is used, The input shaft is installed at the output end of the motor, and the output shaft is connected to the mechanism that requires power. The motor is turned on to drive the input shaft to rotate, and the worm gear rotates to drive the worm wheel to rotate, so that the number of revolutions of the motor is reduced to the required number of revolutions, and the power mechanism is operated through the output shaft; the mounting cover and mounting shell of the existing worm gear reducer are generally fixedly connected by bolts. When it is necessary to inspect or maintain it, it takes a certain amount of time and effort to remove the bolts. Especially when the number of bolts is large or the position is relatively hidden, the disassembly process may be more complicated and cumbersome, which increases the difficulty and labor cost of maintenance work to a certain extent.

[0004] Therefore, it is necessary to provide a new worm gear reducer that is easy to disassemble and assemble to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a worm gear reducer which is easy to disassemble and assemble.

[0006] The utility model provides a worm gear reducer that is easy to disassemble and assemble, comprising: a reducer body and a mounting shell arranged outside the reducer body, a mounting cover is hingedly connected to one side of the upper end of the mounting shell, and the mounting cover is connected to the mounting shell through a plurality of limit members;

[0007] The limit member includes a limit rod, and limit blocks are fixedly connected to the outer walls on opposite sides of the limit rod, and the mounting cover and the mounting shell are respectively provided with a first through hole and a second through hole adapted to the shapes of the limit rod and the two limit blocks, and the inner wall of the second through hole is provided with a circular groove for the two limit blocks to rotate, and a spring for applying thrust to the two limit blocks is fixedly connected to the bottom side of the inner wall of the circular groove, and two limit grooves matching the shapes of the limit rod are provided on the upper side of the inner wall of the circular groove.

[0008] Preferably, the distance from the plane where the bottom side of the limiting block is located to the plane where the top side of the limiting rod is located is greater than the sum of the length of the first through hole and the distance from the plane where the bottom side of the limiting groove is located to the plane where the top side of the second through hole is located.

[0009] Preferably, the height of the inner wall of the limiting groove is adapted to the height of the limiting block.

[0010] Preferably, a knob is fixedly connected to the upper end of the limiting rod.

[0011] Preferably, a plurality of anti-slip strips are fixedly connected to the side wall of the knob.

[0012] Preferably, a handle is fixedly connected to one side of the mounting cover.

[0013] Preferably, the reducer body comprises a worm wheel and a worm arranged in a mounting shell, and the top side of the worm wheel is meshed with the bottom side of the worm wheel, the mounting shell and the mounting cover are provided with semicircular grooves on opposite sides to form two upper mounting openings, and two lower mounting openings are provided on opposite sides of the mounting shell, respectively, the left and right ends of the worm wheel and the front and rear sides of the worm wheel are respectively provided in four balls respectively fixedly provided on the inner side walls of the two lower mounting openings and the two upper mounting openings, the left end of the worm wheel and the central area of ​​the front side wall of the worm wheel are respectively provided with an input shaft and an output shaft, and the input shaft and the output shaft extend out of the mounting shell through the lower mounting opening and the upper mounting opening respectively;

[0014] It also includes an upper bearing and a lower bearing, which are rotatably connected to the front side wall of the upper mounting opening and the left side wall of the lower mounting opening respectively, and the upper bearing and the lower bearing are fixedly connected to the input shaft and the output shaft respectively, the input shaft is fixedly connected to the output end of the motor, and the output shaft is fixedly connected to the mechanism that requires power.

[0015] Compared with the related art, the worm gear reducer provided by the utility model that is easy to disassemble and assemble has the following beneficial effects:

[0016] The utility model provides a worm gear reducer which is easy to disassemble and assemble. When the reducer body needs to be maintained or overhauled, the limit rod is pressed downward, and the bottom end of the limit rod applies pressure to the spring and compresses it, and the limit blocks on both sides of the limit rod slide out of the limit groove and fit into the bottom side of the circular groove. At this time, the limit rod is rotated, and the limit block rotates in the circular groove. Since the circular groove is connected to the second through hole, the limit block is stuck in the first through hole after rotating a certain angle, and pops out from the first through hole under the thrust applied by the spring. At this time, the limit rod can be drawn out from the first through hole and the second through hole, and the limit rod does not limit the mounting shell and the mounting cover, so the mounting cover can be opened from the mounting shell. This structure is convenient for separating the mounting cover fixed on the mounting shell, solves the problem that the traditional reducer is difficult to disassemble during maintenance or overhaul, and reduces the maintenance difficulty of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The schematic diagram of the overall structure of the worm gear reducer provided by the utility model which is easy to disassemble and assemble;

[0018] Figure 2 A schematic diagram of the structural disassembly of the worm gear reducer provided by the utility model that is easy to disassemble and assemble;

[0019] Figure 3 A schematic cross-sectional structure diagram of a worm gear reducer that is easy to disassemble and assemble provided by the utility model;

[0020] Figure 4 for Figure 3 The enlarged view of point A is shown;

[0021] Figure 5 A schematic diagram of the worm gear reducer in the open state that is easy to disassemble and assemble provided by the utility model;

[0022] Figure 6 for Figure 5 The enlarged view of point B is shown;

[0023] Figure 7 A schematic diagram of a partial cross-sectional structure of the installation shell provided by the utility model;

[0024] Figure 8 A schematic diagram of the limit rod structure provided by the utility model;

[0025] Fig. 9 The utility model is provided with a schematic diagram of the partial structural disassembly of a worm gear reducer which is easy to disassemble and assemble.

[0026] Numbers in the figure: 1. Mounting shell; 2. Mounting cover; 3. Upper mounting port; 4. Lower mounting port; 5. Ball; 6. Worm gear; 7. Worm; 8. Input shaft; 9. Output shaft; 10. Upper bearing; 11. Lower bearing; 12. Handle; 13. Knob; 14. Anti-slip strip; 15. Spring; 16. Limit rod; 17. Limit block; 18. First through hole; 19. Second through hole; 20. Circular groove; 21. Limit groove. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0028] Please refer to Figure 1-Figure 9 ,in, Figure 1 The schematic diagram of the overall structure of the worm gear reducer provided by the utility model which is easy to disassemble and assemble; Figure 2 A schematic diagram of the structural disassembly of the worm gear reducer provided by the utility model that is easy to disassemble and assemble; Figure 3 A schematic cross-sectional structure diagram of a worm gear reducer that is easy to disassemble and assemble provided by the utility model; Figure 4 for Figure 3 The enlarged view of point A is shown; Figure 5 A schematic diagram of the worm gear reducer in the open state that is easy to disassemble and assemble provided by the utility model; Figure 6 for Figure 5 The enlarged view of point B is shown; Figure 7 A schematic diagram of a partial cross-sectional structure of the installation shell provided by the utility model; Figure 8 A schematic diagram of the limit rod structure provided by the utility model; Fig. 9 The utility model is provided with a schematic diagram of the partial structural disassembly of a worm gear reducer which is easy to disassemble and assemble.

[0029] In the specific implementation process, Figure 1-Figure 9 As shown, the worm gear 6 and worm 7 reducer which is easy to disassemble and assemble comprises a reducer body and a mounting shell 1 arranged outside the reducer body, a mounting cover 2 is hingedly connected to one side of the upper end of the mounting shell 1, and the mounting cover 2 is connected to the mounting shell 1 through a plurality of stoppers;

[0030] The limiting member includes a limiting rod 16, and limiting blocks 17 are fixedly connected to the outer walls on opposite sides of the limiting rod 16. A first through hole 18 and a second through hole 19 that are adapted to the shapes of the limiting rod 16 and the two limiting blocks 17 are respectively provided on the mounting cover 2 and the mounting shell 1. A circular groove 20 for the two limiting blocks 17 to rotate is provided on the inner wall of the second through hole 19. A spring 15 for applying thrust to the two limiting blocks 17 is fixedly connected to the bottom side of the inner wall of the circular groove 20. Two limiting grooves 21 that are respectively matched with the shapes of the limiting rod 16 are provided on the upper side of the inner wall of the circular groove 20. The distance from the plane where the bottom side of the limiting block 17 is located to the plane where the top side of the limiting rod 16 is located is greater than the sum of the length of the first through hole 18 and the distance from the plane where the bottom side of the limiting groove 21 is located to the plane where the top side of the second through hole 19 is located. The height of the inner wall of the limiting groove 21 is adapted to the height of the limiting block 17.

[0031] The upper end of the limit rod 16 is fixedly connected with a knob 13, and the side wall of the knob 13 is fixedly connected with a plurality of anti-slip strips 14. The knob 13 and the anti-slip strips 14 make it easier to rotate and press the limit rod 16. A handle 12 is fixedly connected to one side of the installation cover 2, which is convenient for the operator to open the installation cover 2 hinged on the installation shell 1.

[0032] The reducer body includes a worm wheel 6 and a worm 7 arranged in a mounting shell 1, and the top side of the worm 7 is meshed with the bottom side of the worm wheel 6. The semicircular grooves on the opposite sides of the mounting shell 1 and the mounting cover 2 are combined to form two upper mounting openings 3. Two lower mounting openings 4 are respectively opened on the opposite sides of the mounting shell 1. The left and right ends of the worm 7 and the front and rear sides of the worm wheel 6 are respectively arranged in four balls 5 fixedly arranged on the inner side walls of the two lower mounting openings 4 and the two upper mounting openings 3. The left end of the worm 7 and the central area of ​​the front side wall of the worm wheel 6 are respectively provided with an input shaft 8 and an output shaft 9, and The input shaft 8 and the output shaft 9 extend out of the mounting shell 1 through the lower mounting opening 4 and the upper mounting opening 3 respectively, and also include an upper bearing 10 and a lower bearing 11, and the upper bearing 10 and the lower bearing 11 are respectively rotatably connected to the front side wall of the upper mounting opening 3 and the left side wall of the lower mounting opening 4, the upper bearing 10 and the lower bearing 11 are respectively fixedly connected to the input shaft 8 and the output shaft 9, the input shaft 8 is fixedly connected to the output end of the motor, and the output shaft 9 is fixedly connected to the mechanism of the required power. The working principle of the reducer is a well-known technology for those skilled in the art, and reference can be made to the application number CN201820540185.9, which will not be elaborated here.

[0033] The working principle provided by the utility model is as follows: when the reducer body needs to be maintained or overhauled, the limit rod 16 is pressed downward, and the bottom end of the limit rod 16 applies pressure to the spring 15 and compresses it, and the limit blocks 17 on both sides of the limit rod 16 slide out of the limit groove 21 and fit into the bottom side of the circular groove 20. At this time, the limit rod 16 is rotated, and the limit block 17 rotates in the circular groove 20. Since the circular groove 20 is connected to the second through hole 19, the limit block 17 is stuck in the first through hole 18 after rotating a certain angle, and pops out from the first through hole 18 under the thrust applied by the spring 15. At this time, the limit rod 16 can be pulled out from the first through hole 18 and the second through hole 19, and the limit rod 16 does not limit the mounting shell 1 and the mounting cover 2, and the mounting cover 2 can be opened from the mounting shell 1, which is convenient for separating the mounting cover 2 fixed on the mounting shell 1.

[0034] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0035] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A worm gear (6) and worm (7) reducer that is easy to disassemble and assemble, characterized in that: It comprises: a reducer body and a mounting shell (1) arranged outside the reducer body, a mounting cover (2) being hingedly connected to one side of the upper end of the mounting shell (1), and the mounting cover (2) being connected to the mounting shell (1) via a plurality of limiting members; The limiting member comprises a limiting rod (16), and limiting blocks (17) are fixedly connected to the outer walls on opposite sides of the limiting rod (16); a first through hole (18) and a second through hole (19) which are adapted to the shapes of the limiting rod (16) and the two limiting blocks (17) are respectively provided on the mounting cover (2) and the mounting shell (1); a circular groove (20) for rotating the two limiting blocks (17) is provided on the inner wall of the second through hole (19); a spring (15) for applying thrust to the two limiting blocks (17) is fixedly connected to the bottom side of the inner wall of the circular groove (20); and two limiting grooves (21) which are respectively matched to the shapes of the limiting rod (16) are provided on the upper side of the inner wall of the circular groove (20).

2. The worm gear (6) and worm (7) reducer that is easy to disassemble and assemble according to claim 1, characterized in that: The distance from the plane where the bottom side of the limiting block (17) is located to the plane where the top side of the limiting rod (16) is located is greater than the sum of the length of the first through hole (18) and the distance from the plane where the bottom side of the limiting groove (21) is located to the plane where the top side of the second through hole (19) is located.

3. The worm gear (6) and worm (7) reducer that is easy to disassemble and assemble according to claim 2, characterized in that: The height of the inner wall of the limiting groove (21) is adapted to the height of the limiting block (17).

4. The worm gear (6) and worm (7) reducer that is easy to disassemble and assemble according to claim 3, characterized in that: The upper end of the limiting rod (16) is fixedly connected with a knob (13).

5. The worm gear (6) and worm (7) reducer that is easy to disassemble and assemble according to claim 4, characterized in that: A plurality of anti-slip strips (14) are fixedly connected to the side wall of the knob (13).

6. The worm gear (6) and worm (7) reducer that is easy to disassemble and assemble according to claim 5, characterized in that: A handle (12) is fixedly connected to one side of the installation cover (2).

7. The worm gear (6) and worm (7) reducer that is easy to disassemble and assemble according to claim 6, characterized in that: The reducer body comprises a worm wheel (6) and a worm (7) arranged in a mounting shell (1), and the top side of the worm (7) is meshed with the bottom side of the worm wheel (6). Semicircular grooves on opposite sides of the mounting shell (1) and the mounting cover (2) are spliced ​​to form two upper mounting openings (3). Two lower mounting openings (4) are respectively arranged on opposite sides of the mounting shell (1). The left and right ends of the worm (7) and the front and rear sides of the worm wheel (6) are respectively arranged in four balls (5) fixedly arranged on the inner side walls of the two lower mounting openings (4) and the two upper mounting openings (3). The left end of the worm (7) and the central area of ​​the front side wall of the worm wheel (6) are respectively provided with an input shaft (8) and an output shaft (9), and the input shaft (8) and the output shaft (9) extend out of the mounting shell (1) through the lower mounting opening (4) and the upper mounting opening (3). The invention also comprises an upper bearing (10) and a lower bearing (11), wherein the upper bearing (10) and the lower bearing (11) are rotatably connected to the front side wall of the upper mounting opening (3) and the left side wall of the lower mounting opening (4), respectively, and the upper bearing (10) and the lower bearing (11) are fixedly connected to the input shaft (8) and the output shaft (9) respectively, wherein the input shaft (8) is fixedly connected to the output end of the motor, and the output shaft (9) is fixedly connected to the mechanism requiring power.

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