Gear mechanism for coaxial gear reducer

Abstract

The utility model discloses a gear mechanism for a coaxial gear reducer, and relates to the technical field related to reducers. The device comprises a box body, a second gear, a first gear and a third gear which are sequentially arranged from left to right are rotationally connected into the box body, linkage gears meshed with the second gear, the first gear and the third gear are arranged above the second gear, the first gear and the third gear, three inner gears which are linearly arranged front and back are arranged on the upper end face of the box body, and an air cylinder is fixed to the rear end face of the box body. An installation rod is fixed to the piston end of the air cylinder, a motor is fixed to the front end face of the box body, a linkage sleeve is fixed to the rotating shaft end of the motor, the end of the installation rod is connected with a moving rod penetrating through the inner positions of the three inner gears, and racks with the same width as the inner gears are fixed to the peripheral side of the moving rod. The gear II, the gear I and the gear III are matched for use, so that the speed increasing or reducing function is realized, meanwhile, the moving rod is controlled to move in the three inner gears, the quick control operation is realized, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to speed reducers, and particularly relates to a gear mechanism for a coaxial gear speed reducer. Background Art

[0002] A gear speed reducer is an independent closed transmission device between a prime mover and a working machine, used to reduce the speed and increase the torque to meet the working requirements. The gear speed reducer is a combination of a speed reduction motor and a large speed reducer. It does not require a coupling and an adapter, has a compact structure, and the load is distributed on the planetary gears, so its load-bearing capacity is higher than that of a general helical gear speed reducer, meeting the need for high torque output in a small space.

[0003] However, when the gear mechanism used in the existing gear speed reducer is in use, since it does not have the function of controlling the cooperation between multiple gear structures, it cannot quickly realize the function of speed increase or decrease, and at the same time, it cannot quickly change the rotation of different gears, which will affect the efficiency of the control operation. For this reason, we provide a gear mechanism for a coaxial gear speed reducer to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a gear mechanism for a coaxial gear speed reducer. Through the cooperative use of gear two, gear one, and gear three, the function of speed increase or decrease is realized. At the same time, the movement of the moving rod inside the three internal gears is controlled to achieve fast control operation and improve the operation efficiency.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model is a gear mechanism for a coaxial gear speed reducer, including a box body; inside the box body, there are rotatably connected gear two, gear one, and gear three arranged in sequence from left to right. Above gear two, gear one, and gear three, there are meshing linkage gears respectively. The tooth pitch of gear two is greater than that of gear one, and the tooth pitch of gear three is less than that of gear one. The shaft rod in the middle of gear one rotates through the front and rear side walls of the box body. On the upper end face of the box body, there are three internal gears arranged linearly in the front and rear direction. A cylinder is fixed to the rear end face of the box body, and an installation rod is fixed to the piston end of the cylinder. A motor is fixed to the front end face of the box body, and a linkage sleeve is fixed to the rotating shaft end of the motor. The end of the installation rod is connected to a moving rod passing through the internal positions of the three internal gears. The other end of the moving rod is slidably inserted into the internal position of the linkage sleeve. A rack with the same width as the internal gear is fixed to the periphery of the moving rod.

[0007] The utility model is further arranged such that a transmission port communicating with the inside is opened on the upper end face of the box body, and two symmetrically arranged installation bars are fixed inside the transmission port. A vertical plate is fixed at the middle position of the upper end face of the installation bar.

[0008] The utility model is further arranged such that the internal gear is rotationally clamped at an internal position of an annular T-shaped opening formed at an end face of a vertical plate through a T-shaped ring fixed by an end face.

[0009] The utility model is further arranged such that sprockets are fixed on shaft rods located behind the second gear, the first gear and the third gear, and the two adjacent sprockets are in transmission connection through a set linkage toothed belt.

[0010] The utility model is further arranged such that the linkage gears arranged in sequence from left to right and the internal gears arranged linearly in the front and back are in one-to-one corresponding transmission connection through chains.

[0011] The utility model is further arranged such that four strip-shaped openings which are annularly and evenly arranged are formed on the periphery of a moving rod located inside a linkage sleeve, and four strip-shaped blocks which are respectively slidably inserted into internal positions of the strip-shaped openings are fixed on an inner side face of the linkage sleeve.

[0012] The utility model is further arranged such that a connecting plate is fixed on an end face of the moving rod close to the air cylinder, a T-shaped rod is fixed on an end face of the connecting plate opposite to the moving rod, and a T-shaped hole which is rotationally matched with the T-shaped rod is formed in an end face of the mounting rod.

[0013] The utility model has the following beneficial effects:

[0014] When the utility model is in use, the rotating linkage gear will drive any one of the second gear, the first gear and the third gear which is meshed and connected therewith to rotate. When the first gear is directly driven to rotate, at this time, the first gear rotates a normal one circle. When the second gear rotates, the second gear will drive the first gear to rotate. Therefore, at this time, the time for the first gear to rotate one circle is longer than the time for it to be directly driven to rotate one circle. When the third gear rotates, the third gear drives the first gear to rotate. At this time, the time for the first gear to rotate one circle is shorter than the time for it to be directly driven to rotate one circle, so as to realize the functions of speed increase or speed decrease.

[0015] When the utility model is in use, control the air cylinder to work. Thus, the air cylinder will drive the moving rod to slide inside the three internal gears, so that the moving rod will drive the rack to move to an internal position of any one of the internal gears, and control the motor to work. Further, the motor will drive the moving rod to rotate through the linkage sleeve. At this time, the moving rod will drive the rack to drive the internal gear which is meshed and connected therewith to rotate, so that the internal gear will drive the linkage gear which is in transmission connection therewith to rotate, so as to realize rapid control operation and improve operation efficiency.

[0016] Certainly, it is not necessary for any product implementing the utility model to simultaneously achieve all the above advantages. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic internal structure diagram of a gear mechanism for a coaxial gear reducer.

[0019] Figure 2 It is an external schematic diagram of the overall structure.

[0020] Figure 3 It is a combined diagram of the linkage gear, motor, cylinder, internal gear and chain in the present utility model.

[0021] Figure 4 It is a structural combined diagram of Gear One, Gear Two and Gear Three in the present utility model.

[0022] Figure 5 It is a combined diagram of the linkage sleeve and the moving rod in the present utility model.

[0023] Figure 6 It is a structural diagram of the cylinder in the present utility model.

[0024] Figure 7 It is an internal sectional view of the box body in the present utility model.

[0025] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0026] 1 - Box body, 101 - Transmission port, 102 - Mounting strip, 103 - Vertical plate, 2 - Gear One, 201 - Sprocket, 202 - Linkage tooth belt, 3 - Gear Two, 4 - Gear Three, 5 - Linkage gear, 6 - Motor, 601 - Linkage sleeve, 602 - Strip-shaped block, 7 - Cylinder, 701 - Moving rod, 702 - Strip-shaped opening, 703 - Connecting plate, 704 - Rack, 705 - T-shaped rod, 706 - Mounting rod, 707 - T-shaped hole, 8 - Internal gear, 9 - Chain. Specific embodiments

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some, rather than all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0028] Embodiment 1, please refer to Figures 1 to 7The utility model is a gear mechanism for a coaxial gear reducer, which realizes the function of speed increase or speed decrease through the coordinated use of gear 2 3, gear 1 2 and gear 3 4, and at the same time controls the movement of the moving rod 701 inside the three internal gears 8 to realize fast control operation and improve operation efficiency.

[0029] Specifically, the box body 1; the box body 1 is internally rotatably connected with gear 2 3, gear 1 2 and gear 3 4 which are arranged in sequence from left to right, and a linkage gear 5 meshing with them is arranged above gear 2 3, gear 1 2 and gear 3 4, the tooth pitch of gear 2 3 is greater than the tooth pitch of gear 1 2, the tooth pitch of gear 3 4 is smaller than the tooth pitch of gear 1 2, the shaft rod in the middle of gear 1 2 rotates through the front and rear side walls of the box body 1, and three internal gears 8 which are arranged linearly in the front and rear are arranged on the upper end face of the box body 1, a cylinder 7 is fixed to the rear end face of the box body 1, a mounting rod 706 is fixed to the piston end of the cylinder 7, a motor 6 is fixed to the front end face of the box body 1, a linkage sleeve 601 is fixed to the rotating shaft end of the motor 6, and the end of the mounting rod 706 is connected to a moving rod 701 which passes through the internal positions of the three internal gears 8, and the other end of the moving rod 701 is slidably inserted into the internal position of the linkage sleeve 601, and a rack 704 whose width is consistent with the width of the internal gear 8 is fixed to the peripheral side of the moving rod 701.

[0030] The operation process of this embodiment is as follows: through the setting and use of the above-mentioned structure, the cylinder 7 is controlled to work, so that the cylinder 7 will drive the moving rod 701 to slide inside the three internal gears 8, so that the moving rod 701 will drive the rack 704 to move to the internal position of any one of the internal gears 8, and control the motor 6 to work, and then the motor 6 will drive the moving rod 701 to rotate through the linkage sleeve 601, at this time, the moving rod 701 will drive the rack 704 to drive the internal gear 8 meshing with it to rotate, so that the internal gear 8 will drive the linkage gear 5 connected to it to rotate, and the internal gear 8 will drive the linkage gear 5 connected to it to rotate. This rotating linkage gear 5 will drive any one of the gears 2 3, gear 1 2 and gear 3 4 that are meshed with it to rotate. When gear 1 2 is directly driven to rotate, gear 1 2 is a normal circle. When gear 2 3 rotates, gear 2 3 will drive gear 1 2 to rotate. Therefore, the time for gear 1 2 to rotate one circle is greater than the time it is directly driven to rotate one circle. When gear 3 4 rotates, gear 3 4 drives gear 1 2 to rotate. At this time, the time for gear 1 2 to rotate one circle is less than the time it is directly driven to rotate one circle, thereby realizing the function of speeding up or slowing down.

[0031] Example 2, please refer to Figure 2 , Figure 4 and Figure 7 On the basis of Example 1, when the internal gear 8 is driven to rotate, the internal gear 8 will rotate at the end surface position of the vertical plate 103, thereby ensuring that the internal gear 8 is stably located above the box body 1.

[0032] Specifically, a transmission port 101 connected to the interior is opened on the upper end surface of the box body 1, and two mounting strips 102 symmetrically arranged front and back are fixed inside the transmission port 101. A vertical plate 103 is fixed to the middle position of the upper end surface of the mounting strip 102. The internal gear 8 is rotatably clamped in the inner position of the annular T-port opened on the end surface of the vertical plate 103 through a T-shaped ring fixed on the end surface. Sprockets 201 are fixed on the shafts behind gear two 3, gear one 2 and gear three 4. Two adjacent sprockets 201 are connected for transmission by a linkage toothed belt 202. The linkage gears 5 arranged from left to right are connected for transmission one by one with the internal gears 8 arranged linearly front and back through chains 9.

[0033] The operation process of this embodiment is as follows: when the internal gear 8 is driven to rotate, the internal gear 8 will rotate at the end surface position of the vertical plate 103, so as to ensure that the internal gear 8 is stably located above the box body 1. At the same time, any one of gear 2 3, gear 1 2 and gear 3 4 rotates, and the sprocket 201 is driven to rotate through the linkage toothed belt 202, so that gear 2 3, gear 1 2 and gear 3 4 will all rotate. When the internal gear 8 rotates, the internal gear 8 will drive the linkage gear 5 connected to it to rotate through the chain 9.

[0034] Example 3, please refer to Figure 5 and Figure 6 On the basis of Example 1, through the rotational cooperation between the T-shaped rod 705 and the T-shaped hole 707, the moving rod 701 will not drive the installation rod 706 to follow the rotation, ensuring that the position of the cylinder 7 will not be affected.

[0035] Specifically, four strip openings 702 evenly distributed in a ring shape are opened on the circumference of the moving rod 701 inside the linkage sleeve 601, and four strip blocks 602 are fixed on the inner side surface of the linkage sleeve 601, which are respectively slidably inserted in the inner positions of the strip openings 702. A connecting plate 703 is fixed to the end face of the moving rod 701 close to the cylinder 7, and a T-shaped rod 705 is fixed to the end face of the connecting plate 703 opposite to the moving rod 701, and a T-shaped hole 707 for rotatably cooperating with the T-shaped rod 705 is opened on the end face of the mounting rod 706.

[0036] The operation process of this embodiment is as follows: since the bar block 602 is located in the internal position of the bar mouth 702, when the motor 6 works to drive the linkage sleeve 601 to rotate, the linkage sleeve 601 will drive the moving rod 701 to rotate through the bar block 602. When the control cylinder 7 is working, the cylinder 7 will drive the moving rod 701 to slide, and at the same time, through the rotation cooperation between the T-shaped rod 705 and the T-shaped hole 707, when the moving rod 701 rotates, the moving rod 701 will not drive the installation rod 706 to follow the rotation, thereby ensuring that the position of the cylinder 7 will not be affected.

[0037] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0038] The preferred embodiments of the present utility model disclosed above are only used to help explain the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A gear mechanism for a coaxial gear reducer, comprising a housing (1); characterized in that: The housing (1) is internally rotatably connected with gear 2 (3), gear 1 (2) and gear 3 (4) which are arranged in sequence from left to right. A linkage gear (5) meshing with the gear 2 (3), gear 1 (2) and gear 3 (4) is arranged above the gear 2 (3), gear 1 (2) and gear 3 (4). The tooth pitch of the gear 2 (3) is greater than the tooth pitch of the gear 1 (2), and the tooth pitch of the gear 3 (4) is less than the tooth pitch of the gear 1 (2). The shaft in the middle of the gear 1 (2) rotates through the front and rear side walls of the housing (1). The upper end surface of the housing (1) is provided with three internal gears (8) which are arranged linearly in the front and rear directions. A cylinder (7) is fixed to the rear end face of the housing (1), a mounting rod (706) is fixed to the piston end of the cylinder (7), a motor (6) is fixed to the front end face of the housing (1), a linkage sleeve (601) is fixed to the rotating shaft end of the motor (6), the end of the mounting rod (706) is connected to a moving rod (701) passing through the internal positions of the three internal gears (8), the other end of the moving rod (701) is slidably inserted into the internal position of the linkage sleeve (601), and a rack (704) having a width consistent with that of the internal gear (8) is fixed to the peripheral side of the moving rod (701).

2. The gear mechanism for a coaxial gear reducer according to claim 1, characterized in that, The upper end surface of the box body (1) is provided with a transmission opening (101) connected to the interior thereof, two installation strips (102) arranged symmetrically in front and back are fixed inside the transmission opening (101), and a vertical plate (103) is fixed in the middle of the upper end surface of the installation strip (102).

3. The gear mechanism for a coaxial gear reducer according to claim 2, wherein, The internal gear (8) is rotatably clamped in a position inside a circular T-shaped opening opened on the end surface of the vertical plate (103) via a T-shaped ring fixed on the end surface.

4. The gear mechanism for a coaxial gear reducer according to claim 1, characterized in that, Sprockets (201) are fixed on the shafts located behind the gear 2 (3), the gear 1 (2) and the gear 3 (4), and two adjacent sprockets (201) are connected by a transmission via a linkage toothed belt (202).

5. The gear mechanism for a coaxial gear reducer according to claim 4, wherein The linkage gears (5) arranged sequentially from left to right and the internal gears (8) arranged linearly in the front and rear directions are connected in a one-to-one transmission manner via a chain (9).

6. The gear mechanism for a coaxial gear reducer according to claim 1, characterized in that, The movable rod (701) inside the linkage sleeve (601) is provided with four strip openings (702) evenly distributed in a ring shape on its circumference, and the inner side surface of the linkage sleeve (601) is fixed with four strip blocks (602) which are slidably inserted into the inner positions of the strip openings (702).

7. The gear mechanism for a coaxial gear reducer according to claim 6, characterized in that, A connecting plate (703) is fixed to the end surface of the moving rod (701) close to the cylinder (7), a T-shaped rod (705) is fixed to the end surface of the connecting plate (703) opposite to the moving rod (701), and a T-shaped hole (707) rotatably matched with the T-shaped rod (705) is formed on the end surface of the mounting rod (706).

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