Split type synchronous transmission mechanism

Abstract

The utility model discloses a split type synchronous transmission mechanism which comprises a gear assembly, a driving shaft, a transmission wheel belt assembly and a driven shaft, the driving shaft is composed of a positioning shaft and a split shaft, the positioning shaft and the split shaft are coaxially arranged, one end of the positioning shaft and one end of the split shaft are detachably connected together, and the other end of the split shaft is detachably connected with the gear assembly. The other end of the positioning shaft can be connected into a motor through a gear assembly, the other end of the split shaft can indirectly drive the encoder to operate through a transmission wheel belt assembly, a driven shaft and a mechano-electronic cam box, and installation and maintenance are very convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of transmission mechanisms, and in particular to the technical field of encoder transmission mechanisms. Background Technology

[0002] An encoder is a device that converts mechanical motion (such as the rotation angle and displacement of a cam) into electrical or digital signals that can be recognized by a control system. It is typically used in scenarios requiring precise monitoring and control of mechanical motion. To ensure proper encoder operation within limited installation space, a power transmission mechanism is usually added between the encoder and the motor. (See also...) Figure 1 and Figure 2 Existing power transmission mechanisms generally include gear assemblies ( Figure 1 and Figure 2 Only the wheel cover 1 is shown, which also includes the shaft gear protected by the wheel cover and the body gear installed at the motor output shaft (the shaft gear meshes with the body gear), drive shaft 2, belt synchronous transmission structure 3 and driven shaft 4; in use, the motor can first transmit power to the electromechanical cam box 5 in sequence through the gear assembly, drive shaft 2, belt synchronous transmission structure 3 and driven shaft 4, and the electromechanical cam box 5 can then drive the encoder to operate.

[0003] The above design uses a single long rod as the drive shaft 2 to connect the wheel cover 1 and the belt synchronous transmission structure 3; however, this integrated long rod not only makes later maintenance inconvenient, but also increases the precision requirements of the device for the factory processing and assembly of various parts (whether the transmission works normally is affected by many external factors). Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the existing technology by proposing a split-type synchronous transmission mechanism that is very convenient to install and maintain.

[0005] To achieve the above objectives, this utility model proposes a split-type synchronous transmission mechanism, including a gear assembly, a drive shaft, a transmission belt assembly, and a driven shaft. The drive shaft is composed of a positioning shaft and a split shaft. The positioning shaft and the split shaft are coaxially arranged and one end of the positioning shaft is detachably connected together. The other end of the positioning shaft can be connected to a motor through the gear assembly. The other end of the split shaft can indirectly drive the encoder to operate through the transmission belt assembly, the driven shaft, and the electromechanical cam box.

[0006] Preferably, the positioning shaft and the split shaft are provided with a socket and a plug that can be interference-fitted.

[0007] Preferably, the end of the positioning shaft with the socket is also provided with several outwardly extending protrusions, and a slot is formed between each pair of adjacent protrusions. Each of the protrusions can be elastically wrapped around the split shaft together during the insertion of the plug into the socket.

[0008] Preferably, a fastener is threadedly connected between the positioning shaft and the split shaft.

[0009] Preferably, the positioning shaft has a positioning through hole between its two opposite side shaft walls, which connects to the outside and the socket. The plug has a split through hole that can be aligned with the positioning through hole. The fastener includes a bolt and a nut. The bolt's thread passes through both the positioning through hole and the split through hole and is then threaded into the nut.

[0010] Preferably, the positioning through hole also has an outwardly extending boss at its opening.

[0011] Preferably, the transmission belt assembly includes a first synchronous gear, a second synchronous gear, and a synchronous toothed belt. The first synchronous gear is fitted onto the end of the split shaft away from the positioning shaft. One end of the driven shaft is fitted with the second synchronous gear, while the other end is fixed to the electromechanical cam box. The synchronous toothed belt is fitted onto and meshes with both the first and second synchronous gears.

[0012] The beneficial effects of this utility model are:

[0013] 1) This utility model adopts a detachable connection design between the positioning shaft and the split shaft for the drive shaft, so that during later maintenance, the staff does not need to disassemble the gear assembly cover and the gear structure at the motor end. Instead, they can maintain or replace the split shaft and its rear transmission belt assembly separately by only disassembling the connection between the positioning shaft and the split shaft. This can greatly reduce maintenance procedures (such as the need to remove the large gear cover in the prior art), shorten maintenance time and reduce maintenance costs.

[0014] 2) Compared with the integrated long rod type drive shaft in the prior art, the split long rod type drive shaft of this utility model also reduces the machining accuracy requirements of a single long rod part (such as straightness and coaxiality), and simplifies the assembly process (no need to calibrate the installation position of the entire long shaft at once, only need to ensure the coaxial connection of the two split parts), which can significantly reduce the difficulty of factory processing and assembly and improve production efficiency;

[0015] 3) The split structure of the drive shaft of this utility model can achieve "uniform part size", allowing each component to be produced in a standardized manner. No special adjustment is required for the long shaft during installation, which effectively saves installation procedures. In addition, the modular design of the split shaft and the positioning shaft facilitates the replacement and upgrading of parts, improves the versatility of parts, and reduces equipment maintenance costs.

[0016] 4) In this utility model, the positioning shaft and the split shaft can be connected together by an interference fit socket and plug, and combined with the elastic wrapping structure of the convex piece, so as to ensure the coaxiality of the two while enhancing the tightness of the connection, reducing axial movement and radial offset during the transmission process, and improving the stability of power transmission.

[0017] 5) In this utility model, the positioning shaft and the split shaft can be reinforced by fasteners passing through the positioning through hole and the split through hole. The boss located at the edge of the positioning through hole can also increase the contact area between the positioning shaft and the bolt and nut, thereby effectively avoiding loosening of the connection due to long-term operation and ensuring transmission accuracy.

[0018] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0019] Figure 1 This is the front view of the existing power transmission mechanism;

[0020] Figure 2 yes Figure 1 Sectional view along axis AA;

[0021] Figure 3 This is the front view of Embodiment 1;

[0022] Figure 4 yes Figure 3 BB-direction sectional view;

[0023] Figure 5 yes Figure 4 Enlarged schematic diagram of part of the structure;

[0024] Figure 6 This is an assembly diagram of the positioning shaft and the split shaft in Embodiment 2;

[0025] Figure 7 This is an assembly diagram of the positioning shaft and the split shaft in Embodiment 3;

[0026] In the figure: 1-gear cover, 2-drive shaft, 21-positioning shaft, 211-insert, 212-protrusion, 213-protrusion, 22-split shaft, 221-plug, 23-fastener, 3-transmission pulley belt assembly, 31-first synchronous gear, 32-second synchronous gear, 33-synchronous toothed belt, 4-passive shaft, 5-mechanical electronic cam box. Detailed Implementation

[0027] Example 1:

[0028] See Figure 3 , Figure 4 and Figure 5This embodiment includes a gear assembly, a drive shaft 2, a transmission belt assembly 3, and a driven shaft 4. The drive shaft 2 is composed of a positioning shaft 21 and a split shaft 22. The positioning shaft 21 and the split shaft 22 are coaxially arranged, and one end of each is detachably connected together. The other end of the positioning shaft 21 can be connected to a motor through the gear assembly. The other end of the split shaft 22 can indirectly drive the encoder through the transmission belt assembly 3, the driven shaft 4, and the electromechanical cam box 5. The end of the positioning shaft 21 away from the split shaft 22 is fixed on the wheel cover 1 of the gear assembly. The wheel cover 1 is fixed to the shaft gear, and the shaft gear meshes with the machine gear. The machine gear is driven to rotate by the motor.

[0029] The positioning shaft 21 and the split shaft 22 are provided with a socket 211 and a plug 221 that can be interference-fitted.

[0030] The transmission belt assembly 3 includes a first synchronous gear 31, a second synchronous gear 32, and a synchronous toothed belt 33. The first synchronous gear 31 is fitted onto the end of the split shaft 22 away from the positioning shaft 21. One end of the driven shaft 4 is fitted with the second synchronous gear 32, while the other end is fixed to the electromechanical cam box 5. The synchronous toothed belt 33 is fitted onto and meshes with both the first synchronous gear 31 and the second synchronous gear 32.

[0031] The working process of this embodiment:

[0032] During operation, the motor drives the positioning shaft 21 to rotate via the gear assembly. The positioning shaft 21 drives the split shaft 22 and the first synchronous gear 31 located on the split shaft 22 to rotate. The first synchronous gear 31 drives the second synchronous gear 32 and the passive shaft 4 located on the second synchronous gear 32 to rotate via the synchronous toothed belt 33. The passive shaft 4 can drive the encoder to operate via the electromechanical cam box 5.

[0033] During maintenance, maintenance personnel can disassemble and assemble the split shaft 22 separately without removing the gear cover 1.

[0034] Example 2:

[0035] See Figure 6 The positioning shaft 21 is provided with a plurality of outwardly extending protrusions 212 at one end with the socket 211. A slot is formed between each pair of adjacent protrusions 212. Each of the protrusions 212 can be elastically wrapped around the split shaft 22 together during the insertion of the plug 221 into the socket 211.

[0036] Everything else is the same as in Example 1.

[0037] Compared to Embodiment 1, in this embodiment, in addition to the connection between the positioning shaft 21 and the split shaft 22 through the interference fit of the socket 211 and the plug 221, the elastic gripping effect of each tab 212 can also be used to improve the tightness of the connection.

[0038] Example 3:

[0039] See Figure 7 The positioning shaft 21 and the split shaft 22 are also connected by a fastener 23.

[0040] The positioning shaft 21 has a positioning through hole between its two opposite side shaft walls, which connects to the outside and the socket 211. The plug 221 has a split through hole that can be directly aligned with the positioning through hole. The fastener 23 includes a bolt and a nut. The bolt thread passes through both the positioning through hole and the split through hole and then is threadedly connected to the nut.

[0041] The positioning through hole also has an outwardly extending boss 213 at its opening.

[0042] Everything else is the same as in Example 2.

[0043] Compared to Embodiment 2, this embodiment can further prevent premature separation between the positioning shaft 21 and the split shaft 22 by using fastener 23, and the boss portion 213 can also improve the assembly stability of the bolt and nut.

[0044] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A split-type synchronous transmission mechanism, characterized in that: It includes a gear assembly, a drive shaft (2), a transmission belt assembly (3), and a driven shaft (4). The drive shaft (2) is composed of a positioning shaft (21) and a split shaft (22). The positioning shaft (21) and the split shaft (22) are coaxially arranged and one end of the positioning shaft (21) is detachably connected together. The other end of the positioning shaft (21) can be connected to a motor through the gear assembly. The other end of the split shaft (22) can indirectly drive the encoder through the transmission belt assembly (3), the driven shaft (4), and the electromechanical cam box (5).

2. The split-type synchronous transmission mechanism as described in claim 1, characterized in that: The positioning shaft (21) and the split shaft (22) are provided with an interlocking socket (211) and a plug (221) that can be interference-fitted.

3. The split-type synchronous transmission mechanism as described in claim 2, characterized in that: The positioning shaft (21) with a socket (211) has a number of outwardly extending tabs (212) at one end. A slot is formed between each pair of adjacent tabs (212). Each tab (212) can be elastically wrapped around the split shaft (22) together during the insertion of the plug (221) into the socket (211).

4. The split-type synchronous transmission mechanism as described in claim 3, characterized in that: Fasteners (23) are also threadedly connected between the positioning shaft (21) and the split shaft (22).

5. The split-type synchronous transmission mechanism as described in claim 4, characterized in that: The positioning shaft (21) has a positioning through hole between the opposite two side shaft walls, which connects to the outside and the socket (211). The plug (221) has a split through hole that can be directly matched with the positioning through hole. The fastener (23) includes a bolt and a nut. The bolt thread is threaded to the nut after passing through the positioning through hole and the split through hole at the same time.

6. The split-type synchronous transmission mechanism as described in claim 5, characterized in that: The positioning through hole is also provided with an outwardly extending boss (213) at the opening.

7. The split-type synchronous transmission mechanism as described in any one of claims 1 to 6, characterized in that: The transmission belt assembly (3) includes a first synchronous gear (31), a second synchronous gear (32), and a synchronous toothed belt (33). The first synchronous gear (31) is fitted onto the end of the split shaft (22) away from the positioning shaft (21). One end of the passive shaft (4) is fitted with the second synchronous gear (32), while the other end is fixed to the electromechanical cam box (5). The synchronous toothed belt (33) is fitted onto and meshes with both the first synchronous gear (31) and the second synchronous gear (32).

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