Gearbox driven by motor for jacquard transmission device and jacquard transmission device

Abstract

The utility model discloses a gear box driven by a motor for a jacquard transmission device, which comprises a servo motor, a gear box shell, a gear shaft rotatably arranged on the gear box shell and a separation cavity positioned between the servo motor and the gear box shell, and the gear shaft consists of a driving shaft and a driving gear fixed on the driving shaft and positioned in the gear box shell. The partition cavity is connected with the servo motor and the gearbox shell, the motor shaft and the driving shaft stretch into the partition cavity and are integrally and rotationally connected, a first oil seal is arranged in a penetrating hole, allowing the driving shaft to stretch into, of the partition cavity, the first oil seal is in sealing fit with the driving shaft, and an oil storage cavity is formed in the internal space of the partition cavity. After the technical scheme is adopted, gear oil of the gearbox can be prevented from leaking to the servo motor during lubrication.

Description

Technical Field

[0001] The utility model relates to a gear box driven by a motor for a jacquard transmission device and the jacquard transmission device, belonging to the technical field of jacquard shedding mechanical transmission. Background Art

[0002] In the patent application filed by the applicant on December 1, 2024, entitled "Motion transmission device and jacquard machine including the same", with application number 202423031317.X, the motor is directly fastened to the housing. Usually, gear oil is contained in the housing for lubrication of the driving gear and the driven gear during meshing transmission. However, during the trial production of this model, it was found that the gear oil leaked into the motor, causing additional resistance when the motor shaft rotates, affecting the smoothness of the motor rotation and the timeliness of the deceleration output transmission. Therefore, the applicant urgently tackled the problem to overcome this drawback; the output shaft of the motor is fixedly connected to the split driving gear, and the driving gear is meshed with the driven gear. Since the protruding shaft section of the output shaft is located in the motor housing and is in a cantilever state, the protruding shaft section of the output shaft and the driving gear have the disadvantage of unstable rotation, which affects the service life of the bearing located in the motor housing for supporting the output shaft. Utility Model Content

[0003] The utility model aims to provide a gear box driven by a motor for a jacquard transmission device and a jacquard transmission device, so as to prevent the gear oil of the gear box from leaking to the servo motor during lubrication.

[0004] To this end, the present invention adopts the following technical solutions:

[0005] The jacquard transmission device uses a motor-driven gearbox, which includes a servo motor, a gearbox housing, and a gear shaft rotatably arranged in the gearbox housing. The gear shaft consists of a drive shaft and a drive gear fixed to the drive shaft and located in the gearbox housing. The improvement is that it also includes a partition cavity located between the servo motor and the gearbox housing, the partition cavity is connected to the servo motor and the gearbox housing respectively, the motor shaft and the drive shaft of the servo motor respectively extend into the partition cavity and are rotatably connected as a whole, and a first oil seal is provided in the through hole of the partition cavity for the drive shaft to extend into. This first oil seal is sealed with the drive shaft, and the internal space of the partition cavity forms an oil storage cavity.

[0006] The gearbox housing is rotatably mounted with a reduction shaft. A reduction gear mounted on the reduction shaft meshes with a drive gear within the gearbox housing. A perforated bearing cap is mounted on one port of the gearbox housing. To prevent oil leakage from the reduction shaft, a second oil seal is mounted on the other port of the gearbox housing and the perforated bearing cap, respectively. These two second oil seals seal against the reduction shaft. One of the shaft extensions of the reduction shaft extends out of a port and the perforated bearing cap, respectively. The second oil seals seal the reduction shaft, preventing gear oil from leaking along the reduction shaft.

[0007] A first seal is installed between the side of the partition cavity facing the gearbox housing and the gearbox housing; a second seal is installed between the perforated bearing and the gearbox housing. The first seal prevents oil leakage from the interface between the partition cavity and the gearbox housing; the second seal prevents oil leakage from the interface between the gearbox housing and the perforated bearing cover.

[0008] The first oil seal and the second oil seal are both skeleton oil seals; the first sealing member and the second sealing member are either sealing gaskets or O-rings.

[0009] In order to reduce the probability of oil leakage, the above-mentioned driving gear is located above the liquid level of the gearbox oil.

[0010] The motor shaft and the drive shaft are connected by an elastic diaphragm coupling arranged in the separation cavity.

[0011] The driving gear is located between the two ends of the driving shaft and the driving gear and the driving shaft are inseparable. When the driving gear and the driving shaft are designed as one, the assembly link of the separate parts is omitted and the assembly error is avoided, and the strength of the whole part is better.

[0012] Another subject of the present invention is to provide a jacquard transmission device, comprising two eccentric members and a motor-driven gearbox according to the present invention as mentioned above, wherein there are two servo motors, two partition cavities and two gearboxes respectively, and the two gearbox shells are fixed to both sides of the jacquard frame, and the other shaft extension end of each reduction shaft extends from the other port of the corresponding gearbox shell and passes through the gearbox shell and the jacquard frame in sequence, and the other shaft extension end of each reduction shaft is connected to an eccentric member.

[0013] Another subject of the present invention provides another jacquard machine transmission device, comprising two eccentric members and a drive shaft supported and arranged transversely on a jacquard machine frame, and a motor-driven gearbox according to the above-mentioned utility model, wherein the servo motor, the partition chamber, and the gearbox are each provided with one, the gearbox housing is fixed to either side of the jacquard machine frame, an extended end of the reduction shaft is located in the transverse space of the jacquard machine frame and is integrally rotatably connected to the drive shaft, and the drive shaft end extending from the jacquard machine frame is axially connected to the two eccentric members at intervals.

[0014] The utility model has the following advantages and positive effects:

[0015] A partition cavity is set between the gear box and the servo motor, which increases the distance from the servo motor to the gear box, and the motor shaft and the drive shaft are respectively extended into the partition cavity. The first oil seal is set through the through hole of the partition cavity for the drive shaft to seal the drive shaft. Therefore, during normal operation, the gear oil in the gear box can be prevented from leaking out of the drive shaft; if the sealing performance of the first oil seal deteriorates, such as aging, but it is not discovered and replaced in time, the oil storage cavity of the partition cavity serves as a temporary collection point. Even if the gear oil seeps out along the gap between the damaged first oil seal and the drive shaft, it can only be collected in the preventively preset oil storage cavity and will not seep into the servo motor, thereby eliminating the disadvantages of the existing technology, avoiding additional resistance when the rotor shaft rotates, ensuring the smoothness of the motor rotation and the timeliness of the output transmission of the drive gear, and avoiding oil pollution and damage to the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 1 is a plan view of the present invention, wherein (a) is a front view, (b) is a right view, and (c) is a left view;

[0017] Figure 2 yes Figure 1 Sectional view along line AA;

[0018] Figure 3 It is a schematic diagram of the structure of the gearbox housing assembled with the partition cavity;

[0019] Figure 4 1 is an outline view of the partition cavity, wherein (a) is a front view, (b) is a bottom view, and (c) is a perspective view;

[0020] Figure 5 yes Figure 4 Cross-sectional view along line BB;

[0021] Figure 6 is a top view of the partition cavity with a top cover installed at its top opening;

[0022] Figure 7 A perspective view of a jacquard transmission device according to an embodiment of the present application;

[0023] Figure 8 This is a stereoscopic diagram of a jacquard transmission device according to an embodiment of the present application, wherein (a) is a stereoscopic diagram from one perspective, and (b) is a stereoscopic diagram from another perspective. DETAILED DESCRIPTION

[0024] Figures 1 to 6The present invention schematically shows a motor-driven gearbox for a jacquard transmission device, comprising a servo motor 1, a gearbox housing 3, and a gear shaft 4 rotatably arranged in the gearbox housing 3. The gear shaft 4 consists of a drive shaft 40 and a drive gear 41 fixed to the drive shaft and located in the gearbox housing 3. The drive gear 41 is located between the two ends of the drive shaft 40, and the drive gear 41 and the drive shaft 40 are an integral part that cannot be disassembled, that is, they are formed by integral processing. The drive shaft 40 is supported by bearings 4I and 4E respectively arranged in the gearbox housing 3. The improvement is that it also includes a partition cavity 2 between the servo motor 1 and the gearbox housing 3, and the partition cavity 2 is connected to the servo motor 1 and the gearbox housing 3 respectively. The motor shaft 10 and the drive shaft 40 of the servo motor 1 are respectively extended into the partition cavity 2, and the motor shaft 10 and the drive shaft 40 are integrally connected for rotation. Specifically, the motor shaft 10 and the drive shaft 40 are connected by an elastic diaphragm coupling 10-40 arranged in the partition cavity 2. The first oil seal OS1 is provided with a through hole 2E in the partition cavity 2 for the drive shaft 40 to extend therethrough. This first oil seal OS1 is sealed with the drive shaft 40, and a side opening 2I is provided on the partition cavity 2 on the opposite side of the through hole 2E. The internal space of the partition cavity 2 forms an oil storage chamber 20. When the sealing performance of the first oil seal decreases, this oil storage chamber 20 can be used to collect the lubricating oil leaked from the gear box, and the gear oil can be discharged in time through the oil drain hole 200.

[0025] The gearbox housing 3 is rotatably provided with a reduction shaft 5. The reduction gear 51 fixed on the reduction shaft 5 engages with the driving gear 41 inside the gearbox housing 3. An open-hole bearing cover 31 is fixed to one port 3I of the gearbox housing 3. Another port 3E of the gearbox housing 3 and the open-hole bearing cover 31 are respectively provided with a second oil seal OS2. These two second oil seals OS2 are respectively sealed with the reduction shaft 5. An extension end 5I of the reduction shaft 5 extends out of a port 3I and the open-hole bearing cover 31 in sequence. The second oil seal OS2 and the first oil seal OS1 mentioned above are both skeleton oil seals.

[0026] A first seal SR1 is set between the side of the partition cavity 2 facing the gearbox housing and the gearbox housing 3; a second seal SR2 is set between the perforated bearing cover and the gearbox housing; the first seal SR1 and the second seal SR2 are either sealing gaskets (such as oil-resistant paper) or O-rings.

[0027] The driving gear is located above the gearbox oil level. Figure 2 , the drive shaft is placed on top and the reduction shaft is placed on the bottom. In this case, the partition cavity is connected to the upper part of the gearbox shell; or the axis of the drive shaft is coplanar with the axis of the reduction shaft, see Figure 8The two aforementioned arrangements both position the drive gear above the static level of the gear oil, minimizing the amount of gear oil that falls onto the side of the partition chamber facing the gearbox housing during lubrication.

[0028] Figure 6 It is shown that a top cover 2U-1 is detachably fixed to the top opening 2U of the partition cavity 2.

[0029] The motor-driven gearbox can be applied to a jacquard machine driven by a double servo motor, that is, according to another aspect of the present invention, see Figure 7 A jacquard transmission device is provided, including two eccentric members of an eccentric member connecting rod mechanism (crank 7 in this embodiment), the improvement of which is that it also includes the motor-driven gearbox mentioned above, and there are two servo motors 1, two partition cavities 2 and two gearboxes respectively. The two gearbox shells 3 are fixed on both sides of the jacquard frame 6, and one shaft extension end 5I of each reduction shaft 5 is located in the horizontal space defined by the jacquard frame 6. The other shaft extension end 5E of each reduction shaft 5 extends from the other port 3E of the corresponding gearbox shell 3 and passes through the gearbox shell 3 and the jacquard frame 6 in sequence. The other shaft extension end 5E of each reduction shaft 5 is connected to a crank 7.

[0030] The motor-driven gearbox can be applied to a jacquard machine driven by a single servo motor, that is, according to another aspect of the present invention, see Figure 8 A jacquard transmission device is provided, including two eccentric members of an eccentric link mechanism (an eccentric wheel 7' in this embodiment) and a transmission shaft 8 supported on a jacquard frame 6 and arranged transversely (referring to the front and rear body directions of the jacquard machine). The improvement is that: it also includes the motor-driven gearbox mentioned above, the servo motor 1, the partition cavity 2 and the gearbox respectively have one, the gearbox housing 3 is fixed to either side of the jacquard frame 6, an extended end 5I of the reduction shaft 5 is located in the transverse space defined by the jacquard frame 6, and the reduction shaft 5 and the transmission shaft 8 are integrally rotatably connected through an elastic diaphragm coupling 9, and the shaft end of the transmission shaft 8 extending out of the jacquard frame 6 is axially spaced and connected to the two eccentric wheels 7'.

Claims

1. A motor-driven gearbox for a jacquard transmission device, comprising a servo motor, a gearbox housing, and a gear shaft rotatably disposed in the gearbox housing, wherein the gear shaft comprises a drive shaft and a drive gear fixed to the drive shaft and located in the gearbox housing, and is characterized in that: It also includes a partition cavity located between the servo motor and the gearbox housing, the partition cavity is connected to the servo motor and the gearbox housing respectively, the motor shaft and the drive shaft of the servo motor respectively extend into the partition cavity and are connected for integral rotation, and a first oil seal is provided in the through hole of the partition cavity for the drive shaft to extend into, and this first oil seal cooperates with the drive shaft seal, and the internal space of the partition cavity forms an oil storage cavity.

2. The motor-driven gearbox for the jacquard transmission device according to claim 1, characterized in that: The gearbox housing is rotatably provided with a reduction shaft, and the reduction gear fixed to the reduction shaft is engaged with the driving gear in the gearbox housing. An open-hole bearing cover is fixed to one port of the gearbox housing, and second oil seals are respectively provided on the other port of the gearbox housing and the open-hole bearing cover. The second oil seals are respectively sealed with the reduction shaft, and one shaft extension end of the reduction shaft extends out of a port and the open-hole bearing cover in sequence.

3. The motor-driven gearbox for the jacquard transmission device according to claim 2, characterized in that: A first sealing member is provided between the side of the separation cavity facing the gear box housing and the gear box housing; and a second sealing member is provided between the open hole bearing and the gear box housing.

4. The motor-driven gearbox for the jacquard transmission device according to claim 3, characterized in that: The first oil seal and the second oil seal are both skeleton oil seals; the first sealing element and the second sealing element are either sealing gaskets or O-rings.

5. The motor-driven gearbox for the jacquard transmission device according to claim 2, characterized in that: The driving gear is located above the liquid level of the gearbox oil.

6. The motor-driven gearbox for the jacquard transmission device according to claim 1, characterized in that: The motor shaft and the drive shaft are connected by an elastic diaphragm coupling arranged in the separation cavity.

7. The motor-driven gearbox for the jacquard transmission device according to claim 1, characterized in that: The driving gear is located between the two ends of the driving shaft and the driving gear and the driving shaft are inseparable.

8. Jacquard transmission device, including two eccentric members, characterized in that: It also includes a motor-driven gearbox according to any one of claims 2 to 5, with two servo motors, two partition chambers and two gearboxes respectively, and the two gearbox shells are fixed on both sides of the jacquard machine frame. The other shaft extension end of each reduction shaft extends from the other port of the corresponding gearbox shell and passes through the gearbox shell and the jacquard machine frame in turn, and the other shaft extension end of each reduction shaft is connected to an eccentric piece.

9. A jacquard transmission device comprising two eccentric members and a transmission shaft supported on a jacquard frame and arranged transversely, characterized in that: It also includes a motor-driven gearbox according to any one of claims 2 to 5, with one servo motor, one partition cavity and one gearbox respectively. The gearbox shell is fixed to either side of the jacquard frame. One extended end of the reduction shaft is located in the lateral space of the jacquard frame and is integrally rotatably connected to the transmission shaft. The transmission shaft end extending out of the jacquard frame is axially connected to two eccentric members at intervals.

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