Connection transmission mechanism of translation portal crane

Abstract

The utility model discloses a linkage transmission mechanism of a translation portal crane, which comprises a reduction gearbox body, a high-voltage brushless motor, a motor spline, a worm, a spline housing and a worm gear rod, the worm is arranged in the reduction gearbox body, the high-voltage brushless motor is arranged at the upper end of the reduction gearbox body, and the motor spline is arranged on the worm gear rod. The motor spline is arranged at the lower end of the high-voltage brushless motor, the spline housing is arranged at the upper end of the worm, the motor spline is matched with the spline housing, the worm gear rod is horizontally arranged on the rear side of the worm, a worm gear is arranged on the worm gear rod, the worm gear is matched with the worm, and the worm gear is arranged on the worm gear rod. And a driving wheel is arranged at the right end of the worm gear rod. The connection transmission mechanism of the translation portal crane is simple in structure, high in strength and long in service life, generated impact force is evenly distributed on each spline tooth of the motor spline and each spline tooth of the spline sleeve through a flexible connection structure of the motor spline and the spline sleeve, buffering performance is excellent, and fatigue strength is better.

Description

Technical Field

[0001] This utility model belongs to the field of sliding door operators, and specifically relates to a connecting transmission mechanism for a sliding door operator. Background Technology

[0002] Existing sliding door motors typically include a motor and a worm gear reducer. When the motor is powered on, it drives the output gear through the worm gear reducer, thus moving the sliding door. Since most sliding door motors are not very fast, they are essentially rigid connections, using flexible pins or cylindrical pins as connecting parts. Therefore, the impact force of the motor's rotation on the connecting parts is directly applied to these pins. Because flexible pins and cylindrical pins have a certain impact fatigue, as well as the inherent yield strength and lifespan of metals, repeated impacts will inevitably lead to potential problems and direct damage. Furthermore, the market demands increasingly higher speeds and heavier doors for sliding door motors. Motors are also becoming faster and more powerful, placing greater demands on the connecting mechanism. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a connecting transmission mechanism for a sliding door operator.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A connecting transmission mechanism for a sliding door operator includes a gearbox, a high-voltage brushless motor, a motor spline, a worm, a spline sleeve, and a worm wheel. The worm is disposed within the gearbox, the high-voltage brushless motor is disposed at the upper end of the gearbox, the motor spline is disposed at the lower end of the high-voltage brushless motor, the spline sleeve is disposed at the upper end of the worm, and the motor spline matches the spline sleeve. The worm wheel is horizontally disposed at the rear side of the worm, and a worm wheel is provided on the worm wheel, which matches the worm. A drive wheel is provided at the right end of the worm wheel.

[0006] Furthermore, the worm gear has a first limiting groove in the middle, the worm gear matches the first limiting groove, the left end of the first limiting groove has a first limiting ring, the first limiting ring matches the left end of the worm gear, and the right end of the first limiting groove has a second limiting ring, the second limiting ring matches the right end of the worm gear.

[0007] Furthermore, the left end of the worm gear is provided with a first insertion hole, and the first insertion hole is provided with a first release rod, a first release key and a first spring. The first release rod is located at the right end of the first insertion hole, the first spring is located at the right end of the first insertion hole, and the first release key is located between the first release rod and the first spring. The middle part of the worm gear is provided with a first release hole, and the first release key matches the first release hole. The right end of the worm gear is provided with a first release groove, and the bottom of the first release groove is provided with a first fixing groove, which matches the first release key.

[0008] Furthermore, the left end of the gearbox is provided with a release support frame, the left end of the release support frame is hinged with a release wrench, the lower end of the release wrench is provided with a cam portion, the right end of the release support frame is provided with a first through hole, the first through hole matches the first insertion hole, and the left end of the first release rod passes through the first through hole and matches the cam portion.

[0009] Furthermore, the motor spline and spline sleeve are both made of high-strength nylon reinforced with glass fiber.

[0010] The present invention discloses a connecting transmission mechanism for a sliding door operator. Compared with the prior art, its advantages are that it has a simple structure, high strength, and long service life. Through the flexible connection structure of the motor spline and spline sleeve, the worm gear is driven to rotate, thereby controlling the opening or closing of the sliding door. The impact force can be evenly distributed to each spline tooth of the motor spline and spline sleeve, thus providing excellent buffering performance and better fatigue strength. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0012] Figure 2 This is a cross-sectional schematic diagram from one perspective of a preferred embodiment provided by this utility model.

[0013] Figure 3 This is a cross-sectional schematic diagram from another perspective of a preferred embodiment provided by this utility model.

[0014] Figure 4 This is a schematic diagram of the spline sleeve of a preferred embodiment of the present invention.

[0015] Figure 5 This is a schematic diagram of the motor spline structure of a preferred embodiment of the present invention.

[0016] Figure 6 This is a schematic diagram of the worm gear of a preferred embodiment provided by this utility model.

[0017] Figure 7 This is a cross-sectional schematic diagram of the worm gear according to a preferred embodiment of the present invention.

[0018] The reference numerals in the attached drawings include: 100, release support frame; 110, release wrench; 111, cam part; 120, release key; 130, release torsion plate; 140, first through hole; 200, gearbox body; 210, high-voltage brushless motor; 211, spline; 220, worm gear; 221, spline sleeve; 230, worm wheel rod; 231, first limiting groove; 232, first release hole; 233, first insertion hole; 240, worm wheel; 241, first release groove; 242, first fixing groove; 250, drive wheel; 261, first release rod; 262, first spring; 263, first release key; 271, first limiting ring; 272, second limiting ring. Detailed Implementation

[0019] This utility model discloses a connecting transmission mechanism and control method for a sliding door operator. The specific implementation of this utility model will be further described below with reference to preferred embodiments.

[0020] See attached diagram. Figure 1-7 , Figure 1 This is a schematic diagram of the structure of a preferred embodiment provided by this utility model. Figure 2 This is a cross-sectional schematic diagram from one perspective of a preferred embodiment provided by this utility model. Figure 3 This is a cross-sectional schematic diagram from another perspective of the preferred embodiment provided by this utility model. Figure 4 This is a schematic diagram of the structure of the spline sleeve 221 according to a preferred embodiment of the present invention. Figure 5 This is a schematic diagram of the structure of the motor spline 211 according to a preferred embodiment of the present invention. Figure 6 This is a schematic diagram of the worm gear 230 according to a preferred embodiment of the present invention. Figure 7 This is a cross-sectional schematic diagram of the worm gear 230 of a preferred embodiment provided by this utility model.

[0021] Preferred embodiment.

[0022] This embodiment provides a connecting transmission mechanism for a sliding door operator, including a reduction gearbox 200, a high-voltage brushless motor 210, a motor spline 211, a worm gear 220, a spline sleeve 221, and a worm wheel 230. The worm gear 220 is disposed inside the reduction gearbox 200. The high-voltage brushless motor 210 is disposed at the upper end of the reduction gearbox 200. The motor spline 211 is disposed at the lower end of the high-voltage brushless motor 210. The spline sleeve 221 is disposed at the upper end of the worm gear 220, and the motor spline 211 matches the spline sleeve 221. The worm wheel 230 is horizontally disposed at the rear side of the worm gear 220. A worm wheel 240 is provided on the worm wheel 230, and the worm wheel 240 matches the worm gear 220. A drive wheel 250 is provided at the right end of the worm wheel 230.

[0023] Furthermore, the worm gear 230 has a first limiting groove 231 in its middle portion, and the worm wheel 240 matches the first limiting groove 231. A first limiting ring 271 is provided at the left end of the first limiting groove 231, matching the left end of the worm wheel 240. A second limiting ring 272 is provided at the right end of the first limiting groove 231, matching the right end of the worm wheel 240. The first limiting ring 271 and the second limiting ring 272 are used to confine the worm wheel 240 within the first limiting groove 231, ensuring the stability of the worm wheel 240, that is, ensuring the cooperation between the worm wheel 240 and the worm 220.

[0024] Furthermore, the left end of the worm gear 230 is provided with a first insertion hole 233, and the first insertion hole 233 is provided with a first release rod 261, a first release key 263 and a first spring 262. The first release rod 261 is located at the right end of the first insertion hole 233, the first spring 262 is located at the right end of the first insertion hole 233, and the first release key 263 is located between the first release rod 261 and the first spring 262. The middle part of the worm gear 230 is provided with a first release hole 232, and the first release key 263 matches the first release hole 232. The right end of the worm gear 240 is provided with a first release groove 241, and the bottom of the first release groove 241 is provided with a first fixing groove 242, which matches the first release key 263. The first release lever 261 pushes the first release key 263 to move to the right, so that the first release key 263 moves out of the first fixed groove 242 and into the first release groove 241, thereby preventing the worm gear 240 from driving the worm gear rod 230 to rotate when it rotates, and thus the first drive wheel 250 will not rotate, thus realizing the release of the sliding door operator.

[0025] Furthermore, the left end of the gearbox 200 is provided with a release support frame 100, and a release wrench 110 is hinged to the left end of the release support frame 100. The lower end of the release wrench 110 is provided with a cam portion 111, and the right end of the release support frame 100 is provided with a first through hole 140, which matches the first insertion hole 233. The left end of the first release rod 261 passes through the first through hole 140 and matches the cam portion 111. Rotating the release wrench 110 downwards causes the cam portion 111 to press the first release rod 261 to move to the right, thereby pushing the first release key 263 to move to the right.

[0026] Furthermore, the motor spline 211 and spline sleeve 221 are both made of high-strength nylon reinforced with glass fiber, which has strong impact resistance, long fatigue life, and relatively low material cost.

[0027] A control method for the connecting transmission mechanism of a sliding door operator includes the following steps:

[0028] Step S1: Assemble the connecting transmission mechanism of the sliding door motor, start the high-voltage brushless motor 210 to drive the motor spline 211 to rotate. During the rotation of the motor spline 211, the spline sleeve 221 will rotate, thereby driving the worm gear 220 to rotate in the reduction gearbox 200. The impact force generated by the connection is evenly distributed on each spline 211 tooth.

[0029] Step S2: During the rotation of the worm gear 220, the worm wheel 240 is driven to rotate, which in turn drives the worm wheel rod 230 to rotate within the reduction gearbox 200, thereby driving the drive wheel 250 to rotate and causing the sliding door to open or close.

[0030] Working principle:

[0031] When the motor is powered on, the motor shaft rotates at high speed (the motor speed in this invention is 3500 rpm). The instantaneous torque Ts is generally three times the rated torque T. For a motor, the torque can be calculated using the formula T = 9.55P / n, where P is the rated power of the motor in kilowatts and n is the rated speed. Taking P = 250W and n = 3500, then T = 0.682 N·m and Ts = 2.046 N·m.

[0032] If the motor and worm gear 220 are rigidly connected, when the torque directly impacts the cylindrical pin or elastic cylindrical pin, the impact generated by the rigid connection will inevitably cause impact cracking in one part. Repeated impacts will lead to stress fracture. The advantage of the connection between the motor spline 211 and spline sleeve 221 in this application is that the impact force is evenly distributed to each spline tooth 211. Furthermore, due to the difference between high-strength nylon reinforced with glass fiber (i.e., reinforced nylon material), the impact performance of the plastic material is superior to that of the rigid material, resulting in better cushioning under impact. Therefore, the design of the motor spline 211 and spline sleeve 221 in this application provides better fatigue strength. Initially, only a secondary mold is needed (two parts can share one mold), and the mold is relatively simple, without wedges or core pulling; it only requires upper and lower mold closing. Using high-strength nylon reinforced with glass fiber provides strong impact resistance, long fatigue life, and relatively low material costs, resulting in a higher cost-performance ratio for the parts.

[0033] It is worth mentioning that the technical features such as the forming of the motor spline 211 and spline sleeve 221 involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial arrangement of these technical features can be adopted by conventional choices in the field, and should not be regarded as the utility model point of this utility model patent. This utility model patent will not be further elaborated in detail.

[0034] For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A connecting transmission mechanism for a sliding door operator, characterized in that, The device includes a gearbox (200), a high-voltage brushless motor (210), a motor spline (211), a worm (220), a spline sleeve (221), and a worm gear (230). The worm (220) is disposed inside the gearbox (200). The high-voltage brushless motor (210) is disposed at the upper end of the gearbox (200). The motor spline (211) is disposed at the lower end of the high-voltage brushless motor (210). The spline sleeve (221) is disposed at the upper end of the worm (220). The motor spline (211) matches the spline sleeve (221). The worm gear is horizontally disposed on the rear side of the worm (220). The worm gear (230) is provided with a worm wheel (240), which matches the worm (220). The right end of the worm gear (230) is provided with a drive wheel (250).

2. The connecting transmission mechanism of the sliding door operator according to claim 1, characterized in that, The worm gear (230) has a first limiting groove (231) in the middle, and the worm wheel (240) matches the first limiting groove (231). The left end of the first limiting groove (231) has a first limiting ring (271), which matches the left end of the worm wheel (240). The right end of the first limiting groove (231) has a second limiting ring (272), which matches the right end of the worm wheel (240).

3. The connecting transmission mechanism of the sliding door operator according to claim 1, characterized in that, The left end of the worm gear (230) is provided with a first insertion hole (233), and the first insertion hole (233) is provided with a first release rod (261), a first release key (263) and a first spring (262). The first release rod (261) is located at the right end of the first insertion hole (233), the first spring (262) is located at the right end of the first insertion hole (233), and the first release key (263) is located between the first release rod (261) and the first spring (262). The middle part of the worm gear (230) is provided with a first release hole (232), and the first release key (263) matches the first release hole (232). The right end of the worm gear (240) is provided with a first release groove (241), and the bottom of the first release groove (241) is provided with a first fixing groove (242), and the first fixing groove (242) matches the first release key (263).

4. The connecting transmission mechanism of the sliding door operator according to claim 3, characterized in that, The left end of the gearbox (200) is provided with a release support frame (100), and the left end of the release support frame (100) is hinged with a release wrench (110). The lower end of the release wrench (110) is provided with a cam part (111). The right end of the release support frame (100) is provided with a first through hole (140), which matches the first insertion hole (233). The left end of the first release rod (261) passes through the first through hole (140) and matches the cam part (111).

5. The connecting transmission mechanism of the sliding door operator according to claim 1, characterized in that, The motor spline (211) and spline sleeve (221) are both made of high-strength nylon with glass fiber.

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