Wear-resistant low-voltage drawer electric execution device
By designing a wear-resistant, low-pressure drawer electric actuator, the problem of unstable operation caused by wear of pulleys and guide rails was solved, achieving stable operation and extended lifespan of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG TIANDA TIANKE TECH CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-08
AI Technical Summary
Wear and tear on the pulleys and guide rails of traditional drawer-type switch cabinets can cause unstable or jammed drawer operation, increasing maintenance costs and equipment downtime.
A wear-resistant, low-pressure drawer electric actuator was designed. Through a height adjustment mechanism and a rotation mechanism, the height of the cylindrical guide rod is adjusted and the unworn surface is rotated to extend the service life of the device.
This effectively avoids the need to replace all parts, reduces maintenance costs and equipment downtime, and improves the stability and lifespan of the equipment.
Smart Images
Figure CN224217982U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electrical equipment technology, specifically relating to a wear-resistant low-pressure drawer electric actuator. Background Technology
[0002] Low-voltage switchgear is a common electrical device in power systems, widely used in industrial, commercial, and civil applications. In the use of switchgear, the drawer-type structure is widely used due to its ease of installation, maintenance, and replacement. However, traditional drawer-type switchgear is prone to wear and tear during long-term use due to frequent friction of the sliding parts, leading to unstable drawer operation or jamming, thus affecting the normal operation of the equipment.
[0003] Problems with existing technology:
[0004] In the prior art, wear on pulleys can reduce their diameter or wear on guide rails can cause uneven surfaces, leading to drawers getting stuck or wobbling during operation and affecting the normal operation of the equipment. Although these problems can be alleviated by increasing lubrication or replacing sliding parts, if the pulleys or guide rails are severely worn, the entire set of parts needs to be replaced. This not only increases maintenance costs but may also lead to longer downtime. Utility Model Content
[0005] The purpose of this invention is to provide a wear-resistant, low-pressure electric actuator for drawers, which can restore the smooth operation of the drawer by adjusting the height of the cylindrical guide rod when the diameter of the pulley decreases; and can be rotated to the unworn surface for continued use when the surface of the cylindrical guide rod is worn, thereby significantly extending the overall service life of the device.
[0006] The specific technical solution adopted by this utility model is as follows:
[0007] A wear-resistant, low-pressure drawer electric actuator includes a switch cabinet. One side of the switch cabinet has multiple mounting cavities, each containing a removable drawer. Each mounting cavity has a first mounting groove on its left and right inner sides. The bottom of each first mounting groove, near its front and rear ends, has a first insertion groove. A support block is slidably mounted inside each insertion groove. The top of each support block has an arc-shaped slot with an opening. A cylindrical guide rod is rotatably mounted between the two arc-shaped slots. First pulleys are located on the left and right sides of the drawer, near its rear end. The outer surface of each pulley has an annular groove that mates with the cylindrical guide rod. Both sides of the switch cabinet have first adjustment mechanisms for adjusting the height of the cylindrical guide rod. The outer wall of the switch cabinet has multiple sets of rotating mechanisms for rotating the cylindrical guide rod.
[0008] The first adjustment mechanism includes multiple threaded rods rotatably mounted on both sides of the switch cabinet. An adjustment plate is threaded onto the outer wall of each threaded rod. Multiple through holes communicating with the first mounting groove are provided on both sides of the switch cabinet. An adjustment top block fixed to the adjustment plate is slidably mounted in the first mounting groove. An inclined surface that slides in contact with the cylindrical guide rod is provided on one side of the top of the adjustment top block and located in the first mounting groove.
[0009] The rotating mechanism includes a second mounting slot located inside the switch cabinet and on one side of the first mounting slot. The inner side of the second mounting slot has a waist groove that communicates with the first mounting slot. One end of the cylindrical guide rod passes through the waist groove and is provided with a worm gear in the second mounting slot. A mounting bracket that is rotatably connected to the cylindrical guide rod is slidably mounted on the inner side of the second mounting slot. The outer wall of the mounting bracket is provided with a shaft tube, and a worm gear that meshes with the worm gear is provided on the shaft tube.
[0010] A linkage rod is inserted into the bottom of the shaft tube, and a third rotating shaft is rotatably installed through the switch cabinet. One end of the third rotating shaft is located in the second mounting groove and is equipped with a bevel gear set connected to the linkage rod. The other end of the third rotating shaft is equipped with a dial wheel.
[0011] The bottom front end of the mounting cavity has two third mounting slots. The inner side of the third mounting slot is provided with a support wheel. The outer wall of the support wheel rolls in contact with the bottom of the drawer. The two sides of the support wheel are provided with second insertion blocks. The inner bottom of the mounting cavity is provided with a second insertion slot that mates with the second insertion blocks.
[0012] The technical effects achieved by this utility model are as follows:
[0013] This invention effectively addresses the wear and tear on pulleys and guide rods caused by long-term use by incorporating a height adjustment mechanism and a cylindrical guide rod rotation mechanism. When the pulley diameter decreases, the drawer's smooth operation can be restored by adjusting the height of the cylindrical guide rod. When the surface of the cylindrical guide rod is worn, it can be rotated to the unworn surface for continued use, thereby significantly extending the overall service life of the equipment. It effectively avoids the need to replace all parts, reducing maintenance costs and equipment downtime. Attached Figure Description
[0014] Figure 1 This is a frontal three-dimensional structural schematic diagram of the present invention;
[0015] Figure 2 This is a schematic diagram of the internal structure of the mounting cavity of this utility model;
[0016] Figure 3 This is a schematic diagram of the connection structure between the first insertion slot and the support block of this utility model;
[0017] Figure 4This is a schematic diagram of the rotating mechanism structure of this utility model;
[0018] Figure 5 This is a schematic diagram of the support wheel structure of this utility model.
[0019] The attached diagram lists the components represented by each number as follows:
[0020] 1. Switch cabinet; 2. Mounting cavity; 3. Drawer; 4. First pulley; 5. First mounting slot; 6. First plug-in slot; 7. Support block; 8. Arc-shaped slot; 9. Cylindrical guide rod; 10. Threaded rod; 11. Adjusting plate; 12. Adjusting top block; 13. Second mounting slot; 14. Waist groove; 15. Worm gear; 16. Mounting bracket; 17. Shaft tube; 18. Worm; 19. Linkage rod; 20. Bevel gear set; 21. Third rotating shaft; 22. Second plug-in slot; 23. Second plug-in block; 24. Support wheel. Detailed Implementation
[0021] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.
[0022] like Figures 1-3 As shown, a wear-resistant low-pressure drawer electric actuator includes a switch cabinet 1. Multiple mounting cavities 2 are provided on one side of the switch cabinet 1. Each mounting cavity 2 contains a removable drawer 3. First mounting grooves 5 are provided on the left and right inner sides of each mounting cavity 2. First insertion grooves 6 are provided at the bottom of the first mounting grooves 5 and near the front and rear ends. Support blocks 7 are slidably mounted inside the first insertion grooves 6. Arc-shaped slots 8 are provided on the top of the support blocks 7, with openings at the top. Cylindrical guide rods 9 are rotatably mounted between the two arc-shaped slots 8. First pulleys 4 are provided on the left and right sides of the drawer 3 and near the rear end. The outer surface of the first pulleys 4 has an annular groove that mates with the cylindrical guide rods 9. First adjustment mechanisms for adjusting the height of the cylindrical guide rods 9 are provided on both sides of the switch cabinet 1. Multiple sets of rotating mechanisms for rotating the cylindrical guide rods 9 are provided on the outer wall of the switch cabinet 1. A spring fixed to the support block 7 is provided at the bottom of the first insertion groove 6.
[0023] The first adjustment mechanism includes multiple threaded rods 10 rotatably mounted on both sides of the switch cabinet 1. An adjustment plate 11 is threadedly connected to the outer wall of the threaded rod 10. Multiple through holes communicating with the first mounting groove 5 are opened on both sides of the switch cabinet 1. An adjustment top block 12 fixed to the adjustment plate 11 is slidably mounted in the first mounting groove 5. An inclined surface that slides in contact with the cylindrical guide rod 9 is provided on one side of the top of the adjustment top block 12 and inside the first mounting groove 5.
[0024] According to the above structure, the arc-shaped groove 8 is provided with an opening at the top, which improves the flatness of the cylindrical guide rod 9 and avoids affecting the movement of the first pulley 4 on the cylindrical guide rod 9, thus improving the practicality of the equipment. The annular groove is provided so that the first pulley 4 can make stable contact with the cylindrical guide rod 9 and is relatively smooth when rolling.
[0025] When the first pulley 4 is used for a long time and its diameter wears down, the height of the cylindrical guide rod 9 can be adjusted to keep the drawer 3 balanced and improve the stability of the drawer 3 when it is pulled out. During adjustment, the threaded rod 10 is rotated, which drives the adjusting plate 11 to move. The adjusting plate 11 drives the adjusting top block 12 to move. The inclined surface on the adjusting top block 12 cooperates with the cylindrical guide rod 9 to push the cylindrical guide rod 9 upward. When the adjusting top block 12 is retracted, the spring pulls the support block 7 to descend and reset, which improves the flexibility of the equipment.
[0026] like Figure 1 , Figure 2 and Figure 4 As shown, the rotating mechanism includes a second mounting groove 13 located inside the switch cabinet 1 and on one side of the first mounting groove 5. The inner side of the second mounting groove 13 has a waist groove 14 communicating with the first mounting groove 5. One end of the cylindrical guide rod 9 passes through the waist groove 14 and is located in the second mounting groove 13, where a worm gear 15 is installed. The inner side of the second mounting groove 13 is slidably mounted with a mounting bracket 16 that is rotatably connected to the cylindrical guide rod 9. The outer wall of the mounting bracket 16 is provided with a shaft tube 17, and a worm 18 that meshes with the worm gear 15 is provided on the shaft tube 17. A linkage rod 19 is inserted into the bottom of the shaft tube 17. A third rotating shaft 21 is rotatably mounted through the switch cabinet 1. One end of the third rotating shaft 21 is located in the second mounting groove 13 and is provided with a bevel gear set 20 connected to the linkage rod 19. The other end of the third rotating shaft 21 is provided with a dial wheel.
[0027] According to the above structure, the surface of the linkage rod 19 is provided with a guide rail, and the inner side of the shaft tube 17 is provided with a guide groove that cooperates with the guide rail, so that the linkage rod 19 can drive the shaft tube 17 to rotate normally when rotating. At the same time, when adjusting the height of the cylindrical guide rod 9, the shaft tube 17 can slide normally up and down along the linkage rod 19. In addition, the waist groove 14 is provided to allow the cylindrical guide rod 9 to move up and down normally, which facilitates the normal use of the equipment.
[0028] When the side of the cylindrical guide rod 9 that contacts the first pulley 4 wears, the third rotating shaft 21 is rotated. The third rotating shaft 21 drives the linkage rod 19 to rotate through the bevel gear set 20. The linkage rod 19 drives the worm gear 18 on the shaft tube 17 to rotate. The worm gear 18 drives the worm wheel 15 to rotate. The worm wheel 15 drives the cylindrical guide rod 9 to rotate, so that the flat side of the cylindrical guide rod 9 contacts the first pulley 4. This avoids the need to replace the entire cylindrical guide rod 9 and improves the service life of the equipment.
[0029] like Figure 2 and Figure 5 As shown, two third mounting slots are provided at the bottom front end of the mounting cavity 2. A support wheel 24 is provided on the inner side of the third mounting slot. The outer wall of the support wheel 24 rolls in contact with the bottom of the drawer 3. A second insertion block 23 is provided on both sides of the support wheel 24. A second insertion slot 22 that mates with the second insertion block 23 is provided at the inner bottom of the mounting cavity 2.
[0030] According to the above structure, the support wheel 24 is easy to disassemble and replace through the cooperation of the second insertion slot 22 and the second insertion block 23, which improves the practicality of the equipment. The support wheel 24 can also support the drawer 3, making the drawer slide out more smoothly and effectively reducing the wear of the drawer 3.
[0031] The working principle of this utility model is as follows: Drawer 3 is fitted onto cylindrical guide rod 9 through the annular groove of first pulley 4, and support wheel 24 supports the bottom. When the drawer is pulled out, first pulley 4 and support wheel 24 roll synchronously to achieve low-friction movement. When the diameter of first pulley 4 decreases due to wear, rotating threaded rod 10 causes adjusting plate 11 to move adjusting top block 12 forward, and inclined surface pushes cylindrical guide rod 9 to compress spring upward until the drawer returns to horizontal. Reverse rotation of threaded rod 10 resets spring and causes support block 7 to descend. When the contact surface of cylindrical guide rod 9 is worn, the dial wheel is turned to drive third rotating shaft 21 to rotate, which drives linkage rod 19 to rotate via bevel gear set 20. Linkage rod 19 drives worm gear 15 on shaft tube 17 to cooperate with worm 18, driving cylindrical guide rod 9 to rotate, switching to the unworn surface for continued use.
[0032] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.
Claims
1. A wear-resistant low-pressure drawer electric actuator, comprising a switch cabinet (1), wherein a plurality of mounting cavities (2) are provided on one side of the switch cabinet (1), and each of the plurality of mounting cavities (2) is provided with a removable drawer (3), characterized in that: The mounting cavity (2) has a first mounting groove (5) on both the left and right inner sides. The bottom of the first mounting groove (5) and near the front and rear ends are provided with a first insertion groove (6). A support block (7) is slidably installed inside the first insertion groove (6). An arc-shaped slot (8) is provided on the top of the support block (7). An opening is provided on the top of the arc-shaped slot (8). A cylindrical guide rod (9) is rotatably installed between the two arc-shaped slots (8). A first pulley (4) is provided on the left and right sides of the drawer (3) near the rear end. An annular groove that cooperates with the cylindrical guide rod (9) is provided on the outer surface of the first pulley (4). A first adjustment mechanism for adjusting the height of the cylindrical guide rod (9) is provided on both sides of the switch cabinet (1). Multiple sets of rotating mechanisms for rotating the cylindrical guide rod (9) are provided on the outer wall of the switch cabinet (1).
2. The wear-resistant low-pressure drawer electric actuator according to claim 1, characterized in that: The first adjustment mechanism includes multiple threaded rods (10) rotatably mounted on both sides of the switch cabinet (1). The outer wall of the threaded rod (10) is threaded with an adjustment plate (11). Both sides of the switch cabinet (1) are provided with multiple through holes communicating with the first mounting groove (5). The first mounting groove (5) is slidably mounted with an adjustment top block (12) fixed to the adjustment plate (11). The top side of the adjustment top block (12) and located in the first mounting groove (5) is provided with an inclined surface that slides in contact with the cylindrical guide rod (9).
3. The wear-resistant low-pressure drawer electric actuator according to claim 1, characterized in that: The rotating mechanism includes a second mounting groove (13) located inside the switch cabinet (1) and on one side of the first mounting groove (5). The inner side of the second mounting groove (13) is provided with a waist groove (14) that communicates with the first mounting groove (5). One end of the cylindrical guide rod (9) passes through the waist groove (14) and is provided with a worm gear (15) in the second mounting groove (13). The inner side of the second mounting groove (13) is slidably mounted with a mounting bracket (16) that is rotatably connected to the cylindrical guide rod (9). The outer wall of the mounting bracket (16) is provided with a shaft tube (17), and a worm (18) that meshes with the worm gear (15) is provided on the shaft tube (17).
4. The wear-resistant low-pressure drawer electric actuator according to claim 3, characterized in that: A linkage rod (19) is inserted into the bottom of the shaft tube (17), and a third rotating shaft (21) is rotatably installed through the switch cabinet (1). One end of the third rotating shaft (21) is located in the second mounting groove (13) and is provided with a bevel gear set (20) connected to the linkage rod (19). The other end of the third rotating shaft (21) is provided with a dial wheel.
5. The wear-resistant low-pressure drawer electric actuator according to claim 1, characterized in that: The bottom front end of the mounting cavity (2) has two third mounting slots. The inner side of the third mounting slot is provided with a support wheel (24). The outer wall of the support wheel (24) rolls in contact with the bottom of the drawer (3). The two sides of the support wheel (24) are provided with second plug-in blocks (23). The bottom of the mounting cavity (2) is provided with a second plug-in slot (22) that cooperates with the second plug-in block (23).