Linear driving mechanism

Abstract

The utility model is applicable to the technical field of transmission equipment, and provides a linear driving mechanism, which comprises a shell, a driving wheel, a linear motor, a linear motor, a linear motor, a linear motor, a linear motor and a linear motor, and is characterized in that the shell is internally and fixedly provided with a rotary driving part; the output shaft of the rotary driving part is provided with a driving wheel; the driven shaft is rotationally connected to the interior of the shell, a driven wheel matched with the driving wheel is arranged at the end of the driven shaft, the driving wheel rotates to drive the driven wheel to rotate, an adjusting sleeve is connected to the exterior of the driven shaft in a threaded mode, the adjusting sleeve is connected to the interior of the shell in a sliding mode, and a sensing piece is arranged on the exterior of the adjusting sleeve in a sleeving mode. And a detection piece for detecting the position of the induction piece is fixedly arranged in the shell, so that by arranging the reversing mechanism, the rotating motion direction is guided into a linear reciprocating motion structure, the occupied space of the equipment is reduced, and meanwhile, the position detection structure is arranged, so that the detection accuracy is improved. And all positions of the sliding structure are accurately detected.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission equipment, in particular to a linear drive mechanism. Background Art

[0002] At present, with the development of the machinery industry, there is an increasing demand for linear drives, for example, various reciprocating sliding mechanical structures are applied to the field of sliding variable displacement pumps such as plunger pumps.

[0003] However, in the prior art, there are many structures for realizing linear drive, such as hydraulic cylinders, pneumatic cylinders, electric cylinders and linear bearings. However, when using this structure for linear drive, it is necessary to ensure the sliding distance of the axis, which results in a large volume of the overall device, affecting the installation position of subsequent equipment. Moreover, when detecting the position of linear motion, most of the gratings are currently used for fixed-point detection, but this detection method cannot detect all motion positions, affecting the accuracy of position detection of the motion mechanism.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of the utility model is to provide a linear drive mechanism, which can guide the rotational movement direction into a linear reciprocating motion structure by setting a reversing mechanism, thereby reducing the space occupied by the equipment, and at the same time setting a position detection structure to accurately detect all positions of the sliding structure.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a linear drive mechanism, including: a shell, a rotating driving member is fixedly provided inside the shell, and a driving wheel is provided on the output shaft of the rotating driving member; a driven shaft rotatably connected to the inside of the shell, and the end of the driven shaft is provided with a driven wheel that cooperates with the driving wheel, and the rotation of the driving wheel drives the driven wheel to rotate, the outside of the driven shaft is threaded with an adjustment sleeve, and the adjustment sleeve is slidably connected to the inside of the shell, the outer sleeve of the adjustment sleeve is provided with a sensing member, and a detection member for detecting the position of the sensing member is fixedly provided inside the shell.

[0007] According to the linear drive mechanism of the utility model, the driving wheel and the driven wheel are both gears, an intermediate gear is provided between the driving wheel and the driven wheel, and a bearing is provided between the driven shaft and the housing.

[0008] According to the linear drive mechanism of the utility model, the detection member is a magnetic induction circuit board, the induction member is an annular magnet sleeved on the outside of the adjustment sleeve, and the magnetic induction circuit board is used to detect the position of the magnet.

[0009] According to the linear drive mechanism of the utility model, a threaded hole screwed to the driven shaft is provided inside the adjusting sleeve, and a limit block is provided outside the adjusting sleeve to limit the rotation of the adjusting sleeve inside the shell, and the limit block is slidably connected to the inside of the shell.

[0010] According to the linear drive mechanism of the utility model, a threaded portion is provided on the outside of the adjustment sleeve, and a fixing nut is provided on the outside of the threaded portion. The fixing nut cooperates with the threaded portion to fix the sensing element and the limit block on the outside of the adjustment sleeve.

[0011] According to the linear drive mechanism of the utility model, a positioning pin is inserted on the outside of the adjustment sleeve, and the limit block abuts against the positioning pin under the action of the fixing nut. A clamping part is provided on the outside of the adjustment sleeve, and the limit block is buckled on the outside of the clamping part.

[0012] According to the linear drive mechanism of the utility model, a limiting protrusion is provided on the outer wall of the limiting block, a limiting groove cooperating with the limiting protrusion is provided inside the shell, and the limiting protrusion slides inside the limiting groove.

[0013] According to the linear drive mechanism of the utility model, a magnet gasket is provided between the fixing nut and the induction member, and a connector connected to the device is provided at the end of the adjustment sleeve.

[0014] According to the linear drive mechanism of the utility model, a front cover connected to the device is provided at one end of the shell, a front sealing gasket is provided between the front cover and the shell, a rear cover for protecting the driving wheel and the driven wheel is provided at the end of the shell away from the front cover, a plug-in terminal is provided on the rear cover, and a rear sealing gasket is provided between the rear cover and the shell.

[0015] The utility model provides a linear drive mechanism, comprising: a shell, a rotating drive member is fixedly arranged inside the shell, a driving wheel is arranged on the output shaft of the rotating drive member, and the total driving force of the rotating drive member for the whole device is ensured; a driven shaft rotatably connected to the inside of the shell, a driven wheel matched with the driving wheel is arranged at the end of the driven shaft, the driving wheel rotates to drive the driven wheel to rotate, and the power of the driving wheel is transmitted to the driven wheel, thereby driving the driven shaft to rotate, an adjusting sleeve is screwed on the outside of the driven shaft, and the adjusting sleeve is slidably connected to the inside of the shell, and the driven shaft rotates to make the adjusting sleeve adjustable. It slides inside the shell to convert the rotational force of the driving wheel into a linear force of the reciprocating motion of the adjusting sleeve, thereby realizing the adjustment of the conveying direction. The outer sleeve of the adjusting sleeve is provided with a sensing member, and the shell is provided with a detection member for detecting the position of the sensing member. The detection member cooperates with the sensing member to realize the real-time position detection of the sensing member. In summary, the technical effect produced by the utility model is that a reversing mechanism is set up to guide the rotational motion direction into a linear reciprocating motion structure, thereby reducing the occupied space of the equipment, and at the same time a position detection structure is set up to accurately detect all positions of the sliding structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 yes Figure 2 Schematic diagram of the AA section structure;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the limit block of the utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the adjustment sleeve of the utility model;

[0021] In the figure, 1-front cover, 2-housing, 3-plug head, 4-cover plate, 5-rear cover, 6-rotating driving member, 7-driving wheel, 8-intermediate gear, 9-driven wheel, 10-driven shaft, 11-fixing nut, 12-magnet gasket, 13-sensing member, 14-limiting block, 141-clamping hole, 142-limiting protrusion, 15-detecting member, 16-adjusting sleeve, 161-screw connection part, 162-connecting head, 163-clamping part. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] See also Figure 1 , Figure 2 and Figure 3 The utility model provides a linear drive mechanism, which includes a housing 2, a rotating drive member 6 is fixedly provided inside the housing, a driving wheel 7 is provided on the output shaft of the rotating drive member 6, and the rotating drive member 6 is guaranteed to provide the total driving force of the entire device; a driven shaft 10 is rotatably connected to the inside of the housing 2, and a driven wheel 9 is provided at the end of the driven shaft 10 to cooperate with the driving wheel 7. The driving wheel 7 drives the driven wheel 9 to rotate, ensuring that the power of the driving wheel 7 is transmitted to the driven wheel 9, thereby driving the driven shaft 10 to rotate, and the driven shaft An adjusting sleeve 16 is screwed onto the outside of 10, and the adjusting sleeve 16 is slidably connected to the inside of the shell 2. By rotating the driven shaft 10, the adjusting sleeve 16 can slide inside the shell 2, so as to convert the rotational force of the driving wheel 7 into a linear force of the reciprocating motion of the adjusting sleeve 16, thereby realizing the adjustment of the conveying direction. The outer sleeve of the adjusting sleeve 16 is provided with a sensing member 13, and a detection member 15 for detecting the position of the sensing member 13 is fixedly provided inside the shell 2. By cooperating with the sensing member 13, the real-time position of the sensing member 13 can be detected.

[0024] Preferably, the driving wheel 7 and the driven wheel 9 of the utility model are both gears, and an intermediate gear 8 is provided between the driving wheel 7 and the driven wheel 9 to ensure the normal transmission effect between the driving wheel 7 and the driven wheel 9. A bearing is provided between the driven shaft 10 and the housing 2 to reduce the friction of the driven shaft 10 during rotation. The detection member 15 is a magnetic induction circuit board, and the sensing member 13 is an annular magnet sleeved on the outside of the adjustment sleeve 16. The magnetic induction circuit board is used to detect the position of the magnet. The position of the annular magnet is detected by the magnetic induction circuit (existing technology), ensuring that the position of the sensing member 13 can be detected in real time, further increasing the accuracy of position detection.

[0025] See also Figure 1 to Figure 5In addition, the interior of the adjusting sleeve 16 of the utility model is provided with a threaded hole screwed on the driven shaft 10 to ensure that when the driven shaft 10 and the adjusting sleeve 16 rotate relative to each other, the position of the adjusting sleeve 16 can be moved laterally. The exterior of the adjusting sleeve 16 is provided with a limit block 14 for limiting the rotation of the adjusting sleeve 16 inside the housing 2. The limit block 14 is slidably connected to the interior of the housing 2. The adjusting sleeve 16 is limited by the limit block 14 to prevent the adjusting sleeve 16 from rotating inside the housing 2 and affecting the normal movement of the adjusting sleeve 16. The exterior of the adjusting sleeve 16 is provided with a threaded portion 161. The exterior of the threaded portion 161 is provided with a fixing nut 11. The fixing nut 1 1 cooperates with the screw connection part 161 to fix the sensing member 13 and the limit block 14 on the outside of the adjusting sleeve 16, ensuring that the adjusting sleeve 16 slides while driving the sensing member 13 and the limit block 14 to move. The outside of the adjusting sleeve 16 is provided with a positioning pin inserted therein, and the limit block 14 abuts against the positioning pin under the action of the fixing nut 11, and the position of the limit block 14 is limited by the positioning pin to prevent the limit block 14 from separating from the adjusting sleeve 16. The outside of the adjusting sleeve 16 is provided with a clamping part 163, and the limit block 14 is buckled on the outside of the clamping part 163 through the clamping hole 141, ensuring that the limit block 14 can effectively limit the rotation of the adjusting sleeve 16.

[0026] Furthermore, the outer wall of the limit block 14 of the utility model is provided with a limit protrusion 142, and the interior of the shell 2 is provided with a limit groove that cooperates with the limit protrusion 142, and the limit protrusion 142 slides inside the limit groove, and the rotation of the limit protrusion 142 is limited by the limit groove, thereby ensuring that the limit block 14 can only slide but not rotate inside the shell 2, and a magnet gasket 12 is provided between the fixing nut 11 and the sensing part 13, and the end of the adjusting sleeve 16 is provided with a connecting head 162 connected to the equipment, thereby ensuring that it can be connected to the subsequent valve stem.

[0027] Better yet, one end of the shell 2 of the utility model is provided with a front cover 1 connected to the device, a front sealing gasket is provided between the front cover 1 and the shell 2 to ensure the normal installation of the shell 2, and the end of the shell 2 away from the front cover 1 is provided with a rear cover 5 for protecting the driving wheel 7 and the driven wheel 9, the rear cover 5 is provided with a cover plate 4, the rear cover 5 is provided with a wire plug 3, and a rear sealing gasket is provided between the rear cover 5 and the shell 2.

[0028] In this embodiment, combined with Figure 1 to Figure 5When in use, first install the corresponding mechanism to the predetermined position, and at the same time, the connector 162 of the adjusting sleeve 16 is connected to the valve stem of the device, and the rotating driving member 6 (rotating motor) drives the driven shaft 10 to rotate through gear transmission. The driven shaft 10 rotates and drives the adjusting sleeve 16 to move back and forth inside the shell 2. The adjusting sleeve 16 that moves back and forth is connected to the valve stem, driving the valve stem to move and position. The magnet sensing element on the magnet sensing circuit board arranged inside the shell 2 can sense the position of the sensing member 13 (annular magnet) on the adjusting sleeve 16, so as to locate the position of the valve stem and control the position of the valve stem. At the same time, a slide groove is arranged inside the shell 2, and a limit block 14 is installed on the adjusting sleeve 16 to prevent the adjusting sleeve 16 from rotating. The limit block 14 cooperates with the slide groove in the shell 2 to prevent the adjusting sleeve 16 from rotating, thereby realizing the technical effect of converting rotation into sliding motion of the adjusting sleeve 16.

[0029] In summary, the utility model provides a linear drive mechanism, including: a shell, a rotating driving member is fixedly provided inside the shell, a driving wheel is provided on the output shaft of the rotating driving member, and the rotating driving member is ensured to provide the total driving force of the entire device; a driven shaft rotatably connected to the inside of the shell, a driven wheel matched with the driving wheel is provided at the end of the driven shaft, the driving wheel rotates to drive the driven wheel to rotate, and the power of the driving wheel is transmitted to the driven wheel, thereby driving the driven shaft to rotate, and an adjusting sleeve is screwed on the outside of the driven shaft, and the adjusting sleeve is slidably connected to the inside of the shell, and the driven shaft rotates to make the adjusting sleeve rotate. The sleeve can slide inside the shell to convert the rotational force of the driving wheel into a linear force of the reciprocating motion of the adjusting sleeve, thereby realizing the adjustment of the conveying direction. The outer sleeve of the adjusting sleeve is provided with a sensing member, and the shell is provided with a detection member for detecting the position of the sensing member. The detection member cooperates with the sensing member to realize the real-time position detection of the sensing member. In summary, the technical effect produced by the utility model is that a reversing mechanism is set up to guide the rotational motion direction into a linear reciprocating motion structure, thereby reducing the occupied space of the equipment, and at the same time a position detection structure is set up to accurately detect all positions of the sliding structure.

[0030] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

[0031] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

Claims

1. A linear drive mechanism, characterized in that: include: A housing, inside which a rotating driving member is fixedly disposed, and an output shaft of the rotating driving member is provided with a driving wheel; A driven shaft is rotatably connected to the inside of the shell, and the end of the driven shaft is provided with a driven wheel that cooperates with the driving wheel. The rotation of the driving wheel drives the driven wheel to rotate. An adjusting sleeve is threaded on the outside of the driven shaft, and the adjusting sleeve is slidably connected to the inside of the shell. The outer sleeve of the adjusting sleeve is provided with a sensing element, and a detection element for detecting the position of the sensing element is fixedly provided inside the shell.

2. The linear drive mechanism according to claim 1, characterized in that: The driving wheel and the driven wheel are both gears, an intermediate gear is arranged between the driving wheel and the driven wheel, and a bearing is arranged between the driven shaft and the housing.

3. The linear drive mechanism according to claim 1, characterized in that: The detection component is a magnetic induction circuit board, the induction component is a ring magnet sleeved on the outside of the adjustment sleeve, and the magnetic induction circuit board is used to detect the position of the magnet.

4. The linear drive mechanism according to claim 1, characterized in that: The inside of the adjusting sleeve is provided with a threaded hole screwed on the driven shaft, and the outside of the adjusting sleeve is provided with a limit block for limiting the rotation of the adjusting sleeve inside the shell, and the limit block is slidably connected to the inside of the shell.

5. The linear drive mechanism according to claim 4, characterized in that: A threaded portion is disposed outside the adjusting sleeve, and a fixing nut is disposed outside the threaded portion. The fixing nut cooperates with the threaded portion to fix the sensing element and the limiting block outside the adjusting sleeve.

6. The linear drive mechanism according to claim 5, characterized in that: A positioning pin is inserted on the outside of the adjusting sleeve, and the limiting block abuts against the positioning pin under the action of the fixing nut. A clamping portion is provided on the outside of the adjusting sleeve, and the limiting block is buckled on the outside of the clamping portion.

7. The linear drive mechanism according to claim 5 or 6, characterized in that: A limiting protrusion is disposed on the outer wall of the limiting block, and a limiting groove matched with the limiting protrusion is disposed inside the shell body, and the limiting protrusion slides inside the limiting groove.

8. The linear drive mechanism according to claim 7, characterized in that: A magnet gasket is arranged between the fixing nut and the induction member, and a connector connected to the device is arranged at the end of the adjusting sleeve.

9. The linear drive mechanism according to any one of claims 1 to 5 and 8, characterized in that: A front cover connected to the device is provided at one end of the shell, a front sealing gasket is provided between the front cover and the shell, a rear cover for protecting the driving wheel and the driven wheel is provided at one end of the shell away from the front cover, a plug-in terminal is provided on the rear cover, and a rear sealing gasket is provided between the rear cover and the shell.

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