Electric cylinder transmission device

Abstract

The utility model relates to the technical field of electric cylinders, and discloses an electric cylinder transmission device which comprises a shell, a ball screw is rotationally connected to the interior of the shell, a guide sliding block is connected to the surface of the ball screw in a threaded mode, and a brake assembly is arranged on one side of the guide sliding block. And the brake assembly comprises a fixed ring, a connecting seat, a connecting rod, a clamping plate, a protection pad, an inclined block, an electric push rod and a movable ring. According to the electric cylinder transmission device, by arranging the braking assembly, the ball screw can be braked, the self-locking braking performance of the ball screw is improved, reverse transmission of the ball screw is prevented, and when a driving motor is closed, an electric push rod is started to operate, a movable ring is pushed to move horizontally, one side of the movable ring extrudes an inclined block, and a connecting rod rotates on a connecting base; the two clamping plates can be driven to get close to each other, finally, the protection pad is attached to the surface of the ball screw, the ball screw is wrapped with the protection pad, and self-locking braking is conducted on the ball screw.

Description

Technical Field

[0001] This utility model relates to the field of electric cylinder technology, specifically to an electric cylinder transmission device. Background Technology

[0002] An electric cylinder is a modular product that integrates a servo motor and a lead screw. It converts the rotary motion of the servo motor into linear motion, and transforms the best advantages of the servo motor—precise speed control, precise revolution control, and precise torque control—into precise speed control, precise position control, and precise thrust control.

[0003] According to application number 202420910279.6, a stable and low-energy-consumption electric cylinder transmission device is disclosed, relating to the field of electric cylinders. It includes a supporting shell, with mounting side blocks symmetrically welded to both sides of the supporting shell. A mating top block is vertically welded to the top surface of the supporting shell. A fixed top box is horizontally fixed to one side of the mating top block. One end of the supporting shell has a horizontally opened end through hole, and an extension tube is horizontally inserted into the inner side of the end through hole. A transmission gear is provided on the inner end of the supporting shell. A rear locking groove is opened on the inner end of the supporting shell, and a fixed bearing is fixedly locked to the inner side of the rear locking groove. A side locking block is welded to one side of the transmission gear, and a transmission screw is horizontally fixedly inserted into one side of the transmission gear. The integrated structure makes it more stable and efficient during use, while the multiple limiting and guide wheel structures make the movement operation smoother and more stable.

[0004] The following problems still exist in actual use:

[0005] (1) Due to the inertial force of its own weight, the moving parts of the ball screw cannot be self-locked after the transmission stops, which makes the ball screw reversible. Therefore, a braking device is required to prevent the ball screw from reversing the transmission.

[0006] (2) Electric cylinders are mostly driven by synchronous belts and synchronous pulleys. When the synchronous pulleys are transmitting power, they may wobble or shift, which can lead to offset and weaken the power, affecting the use of the electric cylinder. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides an electric cylinder transmission device that features a braking device to brake the ball screw, improving the self-locking braking performance of the ball screw, preventing reverse transmission of the ball screw, and preventing the synchronous pulley from wobbling or displacing. This solves the problems mentioned in the background art.

[0008] This utility model provides the following technical solution: an electric cylinder transmission device, including a housing, a ball screw rotatably connected inside the housing, a guide sliding block threadedly connected to the surface of the ball screw, and a braking component provided on one side of the guide sliding block;

[0009] The braking assembly includes a fixed ring, a connecting seat, a connecting rod, a clamping plate, a protective pad, a wedge block, an electric push rod, and a movable ring. A fixed ring is provided on one side of the guide sliding block. Connecting seats are provided on both sides of one end of the fixed ring. A connecting rod is provided on the top of the connecting seat. A clamping plate is provided at one end of the connecting rod. A protective pad is provided on the inner wall of the clamping plate. A wedge block is provided at the other end of the connecting rod. Electric push rods are provided on both sides of the fixed ring. A movable ring is provided on the output shaft of the electric push rod.

[0010] Preferably, a rear cover is fixedly connected to one side of the outer shell, a drive motor is fixedly installed on one side of the rear cover, and a transmission assembly is provided inside the rear cover.

[0011] Preferably, the fixed ring is fixedly connected to one side of the guide sliding block, the connecting seat is fixedly connected to the surface of the fixed ring, the connecting rod is rotatably connected to the inner wall of the connecting seat, the clamping plate is fixedly connected to one end of the connecting rod, the protective pad is fixedly connected to the inner wall of the clamping plate, the inclined block is fixedly connected to the other end of the connecting rod, the electric push rod is fixedly connected to one end of the guide sliding block, and the movable ring is fixedly connected to the output shaft of the electric push rod.

[0012] Preferably, the surfaces of the movable ring and the fixed ring are slidably connected, and one side of the movable ring is in contact with the inclined block.

[0013] Preferably, an extension tube is fixedly connected to one side of the guide sliding block, and one end of the extension tube is located on the outside of the outer shell.

[0014] Preferably, the transmission assembly includes a first synchronous pulley, a second synchronous pulley, a synchronous belt, a positioning wheel, and a positioning groove. The output shaft of the drive motor is fixedly connected to the first synchronous pulley, one end of the ball screw is fixedly connected to the second synchronous pulley, a synchronous belt is sleeved between the second synchronous pulley and the first synchronous pulley, a positioning wheel is fixedly connected to one side of both the first and second synchronous pulleys, and positioning grooves are provided on both sides of the interior of the rear cover, with the positioning wheel located inside the positioning groove.

[0015] Preferably, the first synchronous pulley and the second synchronous pulley are rotatably connected by a synchronous belt.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This electric cylinder transmission device, by being equipped with a braking component, can brake the ball screw, improve the self-locking braking performance of the ball screw, and prevent the ball screw from reverse transmission. When the drive motor is turned off, the electric push rod is started to move, pushing the movable ring to move horizontally, causing one side of the movable ring to press against the inclined block, causing the connecting rod to rotate in the connecting seat, which can drive the two clamping plates to move closer to each other, and finally make the protective pad fit against the surface of the ball screw. The protective pad covers the ball screw and performs self-locking braking on the ball screw.

[0018] 2. The electric cylinder transmission device, by being equipped with a transmission component, can prevent the synchronous pulleys from wobbling or shifting. When synchronous pulley one and synchronous pulley two rotate, they can drive the positioning wheel to rotate in the positioning groove, which can increase stability and prevent synchronous pulley one and synchronous pulley two from wobbling or shifting. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of an electric cylinder transmission device provided by this utility model;

[0020] Figure 2 A schematic cross-sectional view of an electric cylinder transmission device provided by this utility model;

[0021] Figure 3 A schematic diagram of the braking assembly structure of an electric cylinder transmission device provided by this utility model;

[0022] Figure 4 This utility model provides a schematic diagram of the transmission component structure of an electric cylinder transmission device.

[0023] In the diagram: 1. Outer shell; 2. Ball screw; 3. Guide sliding block; 4. Braking assembly; 401. Fixed ring; 402. Connecting seat; 403. Connecting rod; 404. Clamping plate; 405. Protective pad; 406. Inclined block; 407. Electric push rod; 408. Moving ring; 5. Extension tube; 6. Rear cover; 7. Drive motor; 8. Transmission assembly; 801. Synchronous pulley one; 802. Synchronous pulley two; 803. Synchronous belt; 804. Positioning wheel; 805. Positioning groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1 to 3An electric cylinder transmission device includes a housing 1. A ball screw 2 is rotatably connected inside the housing 1. A guide sliding block 3 is threadedly connected to the surface of the ball screw 2. An extension tube 5 is fixedly connected to one side of the guide sliding block 3. One end of the extension tube 5 is located outside the housing 1. A braking assembly 4 is provided on one side of the guide sliding block 3. The braking assembly 4 includes a fixing ring 401, a connecting seat 402, a connecting rod 403, a clamping plate 404, a protective pad 405, a wedge block 406, and an electric push rod 407. The movable ring 408, the guide sliding block 3 is provided with a fixed ring 401 on one side, the fixed ring 401 is provided with a connecting seat 402 on both sides of one end, the connecting seat 402 is provided with a connecting rod 403 on the top, the connecting rod 403 is provided with a clamping plate 404 on one end, the inner wall of the clamping plate 404 is provided with a protective pad 405, the other end of the connecting rod 403 is provided with a wedge 406, the fixed ring 401 is provided with an electric push rod 407 on both sides, and the output shaft of the electric push rod 407 is provided with a movable ring 408;

[0026] By providing a braking component 4, the ball screw can be braked, improving its self-locking braking performance and preventing reverse transmission. When the drive motor 7 is turned off, the electric push rod 407 is activated to drive the movable ring 408 to move horizontally. In conjunction with the movable ring 408, the inclined block 406, the connecting rod 403, and the connecting seat 402, the two clamping plates 404 can be driven to move closer to each other, so that the protective pad 405 is in contact with the surface of the ball screw 2, thus performing self-locking braking on the ball screw 2.

[0027] Please see Figures 1 to 3 The fixed ring 401 is fixedly connected to one side of the guide sliding block 3, the connecting seat 402 is fixedly connected to the surface of the fixed ring 401, the connecting rod 403 is rotatably connected to the inner wall of the connecting seat 402, the clamping plate 404 is fixedly connected to one end of the connecting rod 403, the protective pad 405 is fixedly connected to the inner wall of the clamping plate 404, the inclined block 406 is fixedly connected to the other end of the connecting rod 403, the electric push rod 407 is fixedly connected to one end of the guide sliding block 3, the movable ring 408 is fixedly connected to the output shaft of the electric push rod 407, the movable ring 408 is slidably connected to the surface of the fixed ring 401, and one side of the movable ring 408 is in contact with the inclined block 406.

[0028] By starting the electric push rod 407, the movable ring 408 is pushed to move horizontally, causing one side of the movable ring 408 to press against the inclined block 406, causing the connecting rod 403 to rotate in the connecting seat 402. This can drive the two clamping plates 404 to move closer to each other, ultimately causing the protective pad 405 to adhere to the surface of the ball screw 2. The protective pad 405 covers the ball screw 2, providing self-locking braking and preventing the ball screw 2 from reversing its transmission.

[0029] Please see Figure 2 and Figure 4A rear cover 6 is fixedly connected to one side of the outer shell 1. A drive motor 7 is fixedly installed on one side of the rear cover 6. A transmission assembly 8 is provided inside the rear cover 6. The transmission assembly 8 includes a first synchronous pulley 801, a second synchronous pulley 802, a synchronous belt 803, a positioning wheel 804, and a positioning groove 805. The output shaft of the drive motor 7 is fixedly connected to the first synchronous pulley 801. One end of the ball screw 2 is fixedly connected to the second synchronous pulley 802. A synchronous belt 803 is sleeved between the second synchronous pulley 802 and the first synchronous pulley 801. A positioning wheel 804 is fixedly connected to one side of both the first synchronous pulley 801 and the second synchronous pulley 802. Positioning grooves 805 are provided on both sides of the interior of the rear cover 6. The positioning wheel 804 is located inside the positioning groove 805. The first synchronous pulley 801 and the second synchronous pulley 802 are rotatably connected by the synchronous belt 803.

[0030] By providing the transmission component 8, the swaying displacement of the synchronous pulleys can be prevented. When the first synchronous pulley 801 and the second synchronous pulley 802 rotate, they can drive the positioning wheel 804 to rotate in the positioning groove 805, which can increase stability and prevent the swaying displacement of the first synchronous pulley 801 and the second synchronous pulley 802.

[0031] In this invention, the working principle of the device is as follows:

[0032] In use, by starting the drive motor 7, the synchronous pulley 801 can be rotated, and the synchronous belt 803 can be used to rotate the synchronous pulley 802. At the same time, the ball screw 2 is rotated, which in turn drives the guide sliding block 3 to reciprocate, thereby driving the extension tube 5 to extend and retract. When the synchronous pulleys 801 and 802 rotate, the positioning wheel 804 can be driven to rotate in the positioning groove 805, which can increase stability and prevent the synchronous pulleys 801 and 802 from shaking or displacing.

[0033] When the drive motor 7 is turned off, the electric push rod 407 is started to operate, which pushes the movable ring 408 to move horizontally. This causes one side of the movable ring 408 to press against the inclined block 406, causing the connecting rod 403 to rotate in the connecting seat 402. This can drive the two clamping plates 404 to move closer to each other, and finally make the protective pad 405 fit against the surface of the ball screw 2. The protective pad 405 covers the ball screw 2 and performs self-locking braking on the ball screw 2, preventing the ball screw 2 from reversing its transmission.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric cylinder drive comprising a housing (1), characterized in that The inner part of the outer shell (1) is rotatably connected to a ball screw (2), and the surface of the ball screw (2) is threadedly connected to a guide sliding block (3). A braking component (4) is provided on one side of the guide sliding block (3). The braking assembly (4) includes a fixed ring (401), a connecting seat (402), a connecting rod (403), a clamping plate (404), a protective pad (405), a wedge (406), an electric push rod (407), and a movable ring (408). A fixed ring (401) is provided on one side of the guide sliding block (3). A connecting seat (402) is provided on both sides of one end of the fixed ring (401). A connecting rod (403) is provided on the top of the connecting seat (402). A clamping plate (404) is provided on one end of the connecting rod (403). A protective pad (405) is provided on the inner wall of the clamping plate (404). A wedge (406) is provided on the other end of the connecting rod (403). An electric push rod (407) is provided on both sides of the fixed ring (401). A movable ring (408) is provided on the output shaft of the electric push rod (407).

2. An electric cylinder transmission device according to claim 1, characterized in that: A rear cover (6) is fixedly connected to one side of the outer shell (1), a drive motor (7) is fixedly installed on one side of the rear cover (6), and a transmission assembly (8) is provided inside the rear cover (6).

3. An electric cylinder transmission device according to claim 1, characterized in that: The fixed ring (401) is fixedly connected to one side of the guide sliding block (3), the connecting seat (402) is fixedly connected to the surface of the fixed ring (401), the connecting rod (403) is rotatably connected to the inner wall of the connecting seat (402), the clamping plate (404) is fixedly connected to one end of the connecting rod (403), the protective pad (405) is fixedly connected to the inner wall of the clamping plate (404), the inclined block (406) is fixedly connected to the other end of the connecting rod (403), the electric push rod (407) is fixedly connected to one end of the guide sliding block (3), and the movable ring (408) is fixedly connected to the output shaft of the electric push rod (407).

4. An electric cylinder transmission device according to claim 1, characterized in that: The movable ring (408) is slidably connected to the surface of the fixed ring (401), and one side of the movable ring (408) is in contact with the inclined block (406).

5. An electric cylinder drive according to claim 1, characterized in that: An extension tube (5) is fixedly connected to one side of the guide sliding block (3), and one end of the extension tube (5) is located outside the outer shell (1).

6. An electric cylinder drive according to claim 2, characterized in that: The transmission assembly (8) includes a first synchronous pulley (801), a second synchronous pulley (802), a synchronous belt (803), a positioning wheel (804), and a positioning groove (805). The output shaft of the drive motor (7) is fixedly connected to the first synchronous pulley (801). One end of the ball screw (2) is fixedly connected to the second synchronous pulley (802). A synchronous belt (803) is sleeved between the second synchronous pulley (802) and the first synchronous pulley (801). A positioning wheel (804) is fixedly connected to one side of both the first synchronous pulley (801) and the second synchronous pulley (802). Positioning grooves (805) are opened on both sides of the interior of the rear cover (6). The positioning wheel (804) is located inside the positioning groove (805).

7. An electric cylinder drive according to claim 6, characterized in that: The synchronous wheel one (801) and the synchronous wheel two (802) are connected in rotation through the synchronous belt (803).

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