Hand-cranking propelling system of low-voltage cabinet drawer

Abstract

The utility model provides a hand-cranking propelling system of a low-voltage cabinet drawer, which relates to the technical field of low-voltage cabinet drawers and comprises a turbine propelling mechanism and an indicating mechanism which are matched with each other through a gear transmission device. The turbine propulsion mechanism and the indicating mechanism are arranged on the support frame; the interlocking mechanism comprises a slidable blocking piece arranged on the supporting frame, and the movement track of the slidable blocking piece comprises a shielding position used for shielding the crank insertion opening and an opening position used for making up the crank insertion opening. The closing supporting piece is hinged with the supporting frame; the rotation track of the closing support member comprises an opening position and a closing position. The closing support member at the closing position abuts against the slidable blocking member at the shielding position. The closing support member is provided with a clamping groove, and the clamping groove at the opening position is clamped with the slidable stop member at the opening position. The slidable blocking piece is locked at the shielding position through the switching-on supporting piece, the crank insertion opening is shielded, and unlocking cannot be conducted without switching off.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage cabinet drawers, in particular to a hand-cranked propulsion system for a low-voltage cabinet drawer. Background Art

[0002] In modern power distribution networks and engineering construction, withdrawable low-voltage distribution cabinets are widely used in power distribution systems in power plants, substations, factories, mines, high-rise buildings, and other applications. These cabinets play a vital role in converting, distributing, and controlling power for power distribution, motor control, and lighting distribution equipment.

[0003] In a withdrawable low-voltage distribution cabinet, each circuit drawer should have an operating mechanism for pushing and pulling out in three positions: connection, test, and disconnection. Each position of the mechanism should be clearly marked, and the corresponding position should be able to be pushed in, pulled out, and self-locked. In the prior art, there is no clear interlocking device to lock the drawer. Even when the drawer is in the closed position, the operator can still insert the rocker into the crank insertion port, driving the drawer through the turbine transmission mechanism. The drawer's push mechanism is not locked and can be shaken at any time, which is very prone to operator error. Utility Model Content

[0004] The purpose of the utility model is to provide a hand-cranked propulsion system for a low-voltage cabinet drawer to solve the problems existing in the above-mentioned prior art. When in the closed position, the sliding blocker is locked in the blocking position by the closing support member. The sliding blocker can block the crank handle insertion port to prevent the rocker from being inserted, so that the drawer is in a locked state, realizing the interlocking function that cannot be unlocked without opening the switch, and preventing personnel from operating it incorrectly.

[0005] To achieve the above-mentioned purpose, the present invention provides the following scheme: a hand-cranked propulsion system for a low-voltage cabinet drawer is provided, comprising: a turbine propulsion mechanism for driving the drawer to move within the cabinet body; a crank insertion port for inserting a crank is provided at the front end of the turbine propulsion mechanism; an indicating mechanism for indicating three work positions, the turbine propulsion mechanism and the indicating mechanism being matched with each other through a gear transmission device; further comprising: a support frame; the turbine propulsion mechanism and the indicating mechanism being arranged on the support frame; an interlocking mechanism; the interlocking mechanism comprising a support frame and a gear transmission device; ... A slidable blocker on the support frame, the movement trajectory of the slidable blocker includes a blocking position for blocking the crank handle insertion port and an open position for giving up the crank handle insertion port; a closing support member; the closing support member is hinged to the support frame; the rotation trajectory of the closing support member includes an opening position and a closing position; the closing support member located at the closing position abuts against the slidable blocker located at the blocking position; a snap-fit ​​groove is provided on the closing support member, and the snap-fit ​​groove located at the opening position snaps into the slidable blocker located at the open position.

[0006] Preferably, the slidable block includes an interlocking block plate and an interlocking middle plate; the interlocking block plate is slidably connected to the support frame, and the interlocking block plate located in the blocking position can block the rocker insertion port, and the first end of the interlocking middle plate is hinged to the support frame; the interlocking middle plate also includes a second end and a third end respectively cooperating with the interlocking block plate and the closing support member, and the third end located in the open position is engaged with the engaging groove.

[0007] Preferably, a baffle support is provided on the support frame, and a receiving cavity for receiving the interlocking baffle is provided on the baffle support, and the baffle is in sliding engagement with an inner wall of the receiving cavity.

[0008] Preferably, the baffle support is fixedly connected to the support frame via a first guide bolt, and the interlocking baffle is provided with a first sliding hole for slidingly cooperating with the first guide bolt.

[0009] Preferably, a second guide bolt is provided on the support frame, and a second sliding hole for slidingly fitting with the second guide bolt is opened at the second end portion.

[0010] Preferably, the interlocking middle piece includes a driving part and a main body part for blocking the crank insertion port, a third sliding hole is provided on the support frame, the main body part and the driving part are connected by a third guide bolt that slides with the third sliding hole, and the driving part is provided with an arc-shaped abutting end for abutting with the second end portion.

[0011] Preferably, a guide member is provided on the support frame, and a fourth sliding hole that slides with the guide member is provided on the driving part.

[0012] Preferably, the indicating mechanism includes an indicator gear, and the indicator gear is provided with a card slot; the interlocking block includes an insertion rod for plugging into the card slot.

[0013] Preferably, the first guide bolt and the third guide bolt are connected with a return spring.

[0014] Preferably, a locking bracket is provided on the turbine propulsion mechanism, and the turbine propulsion mechanism includes a positioning seat and a turbine cooperating with the positioning seat, and a locking protrusion is provided at the end of the turbine; a locking groove cooperating with the locking protrusion is provided on the locking bracket.

[0015] Compared with the prior art, the utility model has achieved the following technical effects:

[0016] The utility model is provided with a closing support and a slidable block that cooperate with each other. When in the closed position, the closing support locks the slidable block in the blocking position through the closing support. The slidable block can block the crank handle insertion port, preventing the rocker from being inserted, and keeping the drawer in a locked state. This realizes the interlocking function that cannot be unlocked without opening the door, preventing personnel from operating it incorrectly. If the drawer is to be moved, the closing support must first be controlled to open and unlock the door, allowing the closing support to move until it moves to the open position, allowing the rocker to be inserted into the crank handle insertion port, driving the turbine propulsion mechanism to drive the drawer to move.

[0017] Other technical solutions of the utility model also achieve the following technical effects:

[0018] When the indicating mechanism can indicate the corresponding separation, test and connection positions, the plug rod can be inserted into the corresponding slot. In other positions, the indicator gear can abut the plug rod, so that the interlocking block plate and the interlocking intermediate plate are locked. The third end of the interlocking intermediate plate presses against the closing support member, limiting the closing support member so that the closing support member remains in the opening position and cannot be closed, further preventing personnel from operating incorrectly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall internal structure of the utility model;

[0022] Figure 3 This is a rear view schematic diagram of the overall structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the slidable stopper of the utility model;

[0024] Figure 5 This is a rear view schematic diagram of the overall structure of the slidable stopper of the utility model;

[0025] Figure 6 This is a schematic diagram of the overall assembly of the baffle support member of the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the baffle support member of the utility model;

[0027] Figure 8This is a schematic diagram of the utility model's overall internal gear transmission structure;

[0028] Figure 9 This is a schematic diagram of the structure of the turbine and the positioning seat of the utility model;

[0029] Figure 10 This is a schematic diagram of the turbine structure of the utility model;

[0030] Figure 11 This is a schematic diagram of the turbine propulsion mechanism of the present invention when unlocked.

[0031] Among them, 1. turbine propulsion mechanism; 2. indicator mechanism; 3. support frame; 4. closing support member; 5. interlocking mechanism; 6. crank handle insertion port; 7. gear transmission device; 8. slidable block; 9. snap-fit ​​groove; 10. interlocking block; 11. interlocking intermediate plate; 12. first end; 13. second end; 14. third end; 15. square hole; 16. block support member; 17. accommodating cavity; 18. first guide bolt; 19. first sliding hole; 20. second guide bolt; 21. second sliding hole; 22. main Body; 23. Driving part; 24. Crank docking hole; 25. Inclined surface; 26. Third guide bolt; 27. Third sliding hole; 28. Arc-shaped abutting end; 29. ​​Guide member; 30. Fourth sliding hole; 31. Indicator gear; 32. Slot; 33. Insert rod; 34. Return spring; 35. Locking bracket; 36. Turbine; 37. Positioning seat; 38. Locking protrusion; 39. Locking groove; 40. Locking piece; 41. Locking spring; 42. Locking pin; 43. Separation position; 44. Test position; 45. Connection position. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0034] Please refer to Figure 1-11As shown, in this embodiment, a hand-cranked propulsion system for a low-voltage cabinet drawer is provided, comprising a turbine propulsion mechanism 1, an indicating mechanism 2, a support frame 3, a closing support member 4, and an interlocking mechanism 5. The drawer is driven to move in the cabinet by the turbine propulsion mechanism 1. A crank insertion port 6 is provided at the front end of the turbine propulsion mechanism 1. The crank can be inserted into the crank insertion port 6. The turbine propulsion mechanism 1 can be driven to move by rotating the crank. The indicating mechanism 2 can display the three working positions of separation, test, and connection. The turbine propulsion mechanism 1 and the indicating mechanism 2 cooperate with each other through a gear transmission device 7. The turbine propulsion mechanism 1 and the indicator mechanism 2 are both arranged on the support frame 3; preferably, the support frame 3 is made of cold-rolled stainless steel material, and the interlocking mechanism 5 includes a slidable blocker 8, which is arranged on the support frame 3 and can move on the support frame 3. Its movement trajectory includes a blocking position and an open position. The slidable blocker 8 in the blocking position can block the crank insertion port 6, and the slidable blocker 8 in the open position can make way for the crank insertion port 6, that is, there is a misalignment between the slidable blocker 8 and the crank insertion port 6, ensuring that the crank can be normally inserted into the crank insertion port 6. The closing support 4 is hinged to the support frame 3, and the rotation trajectory of the closing support 4 includes a closing position and an opening position; the closing support 4 in the closing position abuts against the slidable blocker 8 in the blocking position; the closing support 4 is provided with a clamping groove 9, and the clamping groove 9 in the opening position clamps with the slidable blocker 8 in the open position.

[0035] Working principle: S1. When the closing support 4 is in the closed state, the indicating mechanism 2 indicates the connected position, and the slidable blocker 8 directly abuts against the closing support 4. The closing support 4 limits the slidable blocker 8, preventing the slidable blocker 8 from moving to the open position. At this time, the slidable blocker 8 is locked in the blocking position, and the slidable blocker 8 can block the crank handle insertion port 6, preventing the rocker from being inserted into the crank handle insertion port 6;

[0036] S2. The closing support 4 is rotated to the opening position. The indicating mechanism 2 still indicates the connected position. At this time, the engaging groove 9 on the closing support 4 is aligned with the slidable block 8. The engaging groove 9 makes way for the slidable block 8. The closing support 4 releases the limit on the slidable block 8, and the slidable block 8 is unlocked.

[0037] S3. Control the slidable stopper 8 to move on the support frame 3 until it is in the open position. The slidable stopper 8 no longer blocks the crank handle insertion opening 6, allowing the crank handle insertion opening 6 to be opened. At this time, the slidable stopper 8 engages with the engaging groove 9 in the open position. The rocker is inserted into the crank handle insertion opening 6, and the rocker drives the turbine propulsion mechanism 1 to move forward. The turbine propulsion mechanism 1 then drives the drawer to move within the cabinet. At the same time, the turbine propulsion mechanism 1 can drive the indicator mechanism 2 to rotate through the gear transmission device 7, and the indicator mechanism 2 switches from the connected position to the test position and the disconnected position in sequence.

[0038] S4. Take out the rocker to move the drawer backward.

[0039] The present invention is provided with a closing support 4 and a slidable block 8 that cooperate with each other. When in the closed position, the closing support 4 locks the slidable block 8 in the blocking position. The slidable block 8 can block the crank insertion port 6 to prevent the rocker from being inserted, so that the drawer is in a locked state, realizing an interlocking function that cannot be unlocked without opening the door, and preventing personnel from operating the drawer incorrectly. If the drawer is to be moved, the closing support 4 must first be controlled to open and unlock, so that the closing support 4 can be moved until it moves to the open position, so that the rocker is inserted into the crank insertion port 6, and the turbine propulsion mechanism 1 drives the drawer to move.

[0040] In one embodiment, the slidable block 8 includes an interlocking block 10 and an interlocking intermediate piece 11. The interlocking block 10 is slidably connected to the support frame 3. When in the blocking position, the interlocking block 10 can block the crank insertion opening 6. The interlocking intermediate piece 11 has three ends, namely a first end 12, a second end 13, and a third end 14. The first end 12 of the interlocking intermediate piece 11 is hinged to the support frame 3. The interlocking intermediate piece 11 abuts the interlocking block 10 via the second end 13. The third end 14 cooperates with the closing support member 4. When in the open position, the third end 14 is engaged with the engaging groove 9. When the closing support 4 is in the closed state, the interlocking block 10 and the interlocking intermediate piece 11 are both in the blocking position. At this time, the outer peripheral edge of the closing support 4 abuts the third end 14. Preferably, the cross-section of the closing support 4 is circular, and the arc-shaped edge of the closing support 4 abuts the third end 14; thereby, the closing support 4 limits the interlocking intermediate piece 11, and the second end 13 can abut the interlocking block 10, so that the interlocking intermediate piece 11 limits the interlocking block 10. At this time, the interlocking block 10 in the blocking position can block the crank insertion port 6. In this process, the limiting effect of the closing support 4 can prevent the interlocking intermediate piece 11 from sliding; the limiting effect of the interlocking intermediate piece 11 can prevent the interlocking block 10 from sliding toward the open position, thereby locking the hand crank propulsion system.

[0041] When the closing support 4 is in the open state, a square hole 15 is provided in the closing support 4, and a matching square control rod is provided in the square hole 15. The square control rod drives the closing support 4 to rotate, so that the closing support 4 is in the open position. At this time, the engaging groove 9 on the closing support 4 is aligned with the third end 14, that is, the gap in the engaging groove 9 can make way for the third end 14 of the interlocking intermediate piece 11, allowing the interlocking intermediate piece 11 to move toward the engaging groove 9. At this time, the interlocking block 10 is driven to move toward the open position, and the interlocking block 10 pushes the interlocking intermediate piece 11 into the engaging groove 9 until the third end 14 is engaged with the engaging groove 9. At this time, the interlocking block 10 makes way for the crank handle insertion opening 6, removing the obstruction, and the rocker can be inserted into the crank handle insertion opening 6. Preferably, the third end portion 14 includes an arc-shaped protrusion, and the engaging groove 9 is an arc-shaped groove. During engaging, the arc-shaped groove can guide the arc-shaped protrusion so that the arc-shaped protrusion is smoothly engaged in the engaging groove 9 .

[0042] In this embodiment, a baffle support 16 is provided on the support frame 3. A receiving cavity 17 is provided on the baffle support 16. The receiving cavity 17 can accommodate the interlocking baffle 10. The interlocking baffle 10 is slidably connected to the inner sidewall of the receiving cavity 17. The baffle support 16 can support and limit the interlocking baffle 10. The baffle support 16 is fixedly connected to the support frame 3.

[0043] In this embodiment, the baffle support 16 is fixedly connected to the support frame 3 through a first guide bolt 18, and a first sliding hole 19 is provided on the interlocking baffle 10, which slides with the first guide bolt 18 through the first sliding hole 19 to limit the sliding of the interlocking baffle 10.

[0044] In this embodiment, a second guide bolt 20 is provided on the support frame 3, and a second sliding hole 21 is opened on the second end portion 13 of the interlocking intermediate piece 11. The second sliding hole 21 slides with the second guide bolt 20, and the interlocking intermediate piece 11 slides along the second guide bolt 20 through the second sliding hole 21, thereby limiting the moving direction of the interlocking intermediate piece 11. While ensuring that the third end portion 14 can be stably engaged with the clamping groove 9, it can also ensure that the second end portion 13 can strictly abut the interlocking baffle 10.

[0045] In this embodiment, a crank docking hole 24 is provided on the interlocking block 10, and a slope 25 is provided on the side of the crank docking hole 24. When the interlocking block 10 is in the open position, the crank docking hole 24 is aligned with the crank insertion opening 6, and the crank is inserted into the crank insertion opening 6 through the crank docking hole 24. The crank pushes the slope 25, pushing the interlocking block 10 to move toward the open position.

[0046] In this embodiment, the interlocking intermediate plate 11 and the interlocking baffle 10 are mainly composed of plastic parts, and the outer layer of the closing support member 4 is also made of plastic parts, so as to solve the problems of burrs and deformation in sheet metal parts causing jamming of moving components.

[0047] In one embodiment, the interlocking intermediate plate 11 includes a main body 22 and a driving portion 23. The driving portion 23 abuts the interlocking intermediate plate 11, while the main body 22 blocks the crank insertion opening 6. The driving portion 23 and the main body 22 are locked together by a third guide bolt 26. A third sliding hole 27 is provided on the support frame 3, and the third guide bolt 26 slidably engages with the third sliding hole 27. The sidewalls of the third sliding hole 27 limit the sliding path of the third guide bolt 26, ensuring stable sliding of the interlocking intermediate plate 11 on the support frame 3. The driving portion 23 is provided with an arcuate abutting end 28, which abuts the second end 13. Preferably, the arcuate abutting end 28 is an arcuate groove, and the second end 13 is an arcuate protrusion that mates with the arcuate groove. The arcuate protrusion can snap into the arcuate groove, ensuring that the interlocking blocking plate 10 can stably abut the interlocking intermediate plate 11.

[0048] In this embodiment, a guide member 29 is provided on the support frame 3, and a fourth sliding hole 30 is provided on the driving part. The fourth sliding hole 30 can slide with the guide member 29. The guide member 29 provides a limit for the sliding of the fourth sliding hole 30, ensuring that the driving part 23 can slide stably on the support frame 3.

[0049] In this embodiment, the indicating mechanism 2 includes an indicator gear 31, and three slots 32 corresponding to the three working positions are provided on the indicator gear 31; the interlocking block 10 includes an insert rod 33 for being plugged into the slot 32; when the indicating mechanism 2 can indicate the corresponding separation, test and connection three working positions, the insert rod 33 can be inserted into the corresponding slot 32, and in other positions, the indicator gear 31 can abut against the insert rod 33, so that the interlocking block 10 and the interlocking intermediate piece 11 cannot move to the blocking position. At this time, the interlocking block 10 and the interlocking intermediate piece 11 are locked, and the interlocking intermediate piece 11 cannot move up and down. The third end 14 of the interlocking intermediate piece 11 presses against the closing support 4, and the closing support 4 cannot rotate, so that the closing support 4 remains in the opening position and cannot be closed. Only when the insertion rod 33 can be inserted into the slot 32 and the interlocking intermediate piece 11 releases the limit on the closing support member 4, can the closing support member 4 be closed, further preventing personnel from operating incorrectly.

[0050] In this embodiment, a return spring 34 is connected to the first guide bolt 18 and the third guide bolt 26 on the side facing away from the support frame 3. When the closing support member 4 is in the closed state, the slidable block 8 is locked in the blocking position, the first guide bolt 18 is fixedly connected to the support frame 3, and the third guide bolt 26 is able to slide along the third sliding hole 27 in the support frame 3. When the insertion rod 33 is aligned with the corresponding retaining slot 32, the return spring 34 can restore the deformation and drive the third guide bolt 26 to slide, thereby returning the interlocking intermediate plate 11 and the interlocking block plate 10 to the blocking position.

[0051] In one embodiment, a locking bracket 35 is provided on the turbine propulsion mechanism 1; the turbine propulsion mechanism 1 includes a turbine 36 and a positioning seat 37. Preferably, the positioning seat 37 is preferably fixedly connected to the cabinet body, and the turbine propulsion mechanism 1 drives the drawer to move. A locking protrusion 38 is provided at the end of the turbine 36; a locking groove 39 is provided on the locking bracket 35, and the locking protrusion 38 can be engaged through the locking groove 39. When the locking groove 39 is engaged with the locking protrusion 38, the turbine 36 can be locked to prevent the turbine 36 from rotating. Preferably, a locking plate 40 is fixedly provided on the locking bracket 35; the locking plate 40 is fixedly connected to the locking bracket 35, and the locking plate 40 is slidably connected to the turbine propulsion mechanism 1 via a locking pin 42. Specifically, the sliding connection is achieved via the locking pin 42. The locking pin 42 is fixedly connected to the locking plate 40, and a sliding groove is provided on the turbine propulsion mechanism 1 to slide with the locking plate 40. A locking spring 41 is connected between the locking plate 40 and the locking bracket 35. During operation, the lower edge of the locking plate 40 abuts the positioning seat 37 below, and the locking plate 40 drives the locking bracket 35 to slide upward, so that the locking groove 39 disengages the locking protrusion 38, allowing the turbine propulsion mechanism 1 to move normally and preventing misoperation from causing an incorrect starting sequence. In the accompanying drawings, 43 indicates the separation position; 44 indicates the test position; and 45 indicates the connection position.

[0052] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0053] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A manual propulsion system for a low-voltage cabinet drawer, comprising: A turbine propulsion mechanism (1) for driving a drawer to move within a cabinet; a crank insertion opening (6) for inserting a crank is provided at the front end of the turbine propulsion mechanism (1); An indicating mechanism (2) for indicating three workstations, wherein the turbine propulsion mechanism (1) and the indicating mechanism (2) are matched with each other through a gear transmission device (7); characterized in that: Also includes: Support frame (3); the turbine propulsion mechanism (1) and the indicating mechanism (2) are arranged on the support frame (3); An interlocking mechanism (5); the interlocking mechanism (5) comprises a slidable blocker (8) provided on the support frame (3), the movement trajectory of the slidable blocker (8) including a blocking position for blocking the crank handle insertion opening (6) and an open position for releasing the crank handle insertion opening (6); A closing support member (4); the closing support member (4) is hinged to the support frame (3); the rotation trajectory of the closing support member (4) includes an opening position and a closing position; the closing support member (4) located at the closing position abuts against the slidable blocker (8) located at the blocking position; a clamping groove (9) is provided on the closing support member (4), and the clamping groove (9) located at the opening position is clamped with the slidable blocker (8) located at the opening position.

2. The hand-cranked propulsion system for the low-voltage cabinet drawer according to claim 1 is characterized in that: The slidable blocking member (8) includes an interlocking blocking piece (10) and an interlocking intermediate piece (11); the interlocking blocking piece (10) is slidably connected to the support frame (3); the interlocking blocking piece (10) located in the blocking position can block the crank insertion port (6); the first end (12) of the interlocking intermediate piece (11) is hinged to the support frame (3); the interlocking intermediate piece (11) also includes a second end (13) and a third end (14) respectively cooperating with the interlocking blocking piece (10) and the closing support member (4); the third end (14) located in the open position is engaged with the engaging groove (9).

3. The manual propulsion system for the low-voltage cabinet drawer according to claim 2 is characterized in that: A baffle support member (16) is provided on the support frame (3), and a receiving cavity (17) for receiving the interlocking baffle (10) is provided on the baffle support member (16), and the baffle is in sliding engagement with the inner wall of the receiving cavity (17).

4. The hand-cranked propulsion system for the low-voltage cabinet drawer according to claim 3 is characterized in that: The baffle support (16) is fixedly connected to the support frame (3) via a first guide bolt (18), and a first sliding hole (19) for slidingly cooperating with the first guide bolt (18) is provided on the interlocking baffle (10).

5. The hand-cranked propulsion system for the low-voltage cabinet drawer according to claim 4 is characterized in that: A second guide bolt (20) is provided on the support frame (3), and a second sliding hole (21) is provided at the second end portion (13) for sliding engagement with the second guide bolt (20).

6. The hand-cranked propulsion system for the low-voltage cabinet drawer according to claim 5, characterized in that: The interlocking intermediate piece (11) includes a driving portion (23) and a main body portion (22) for blocking the crank insertion port (6); a third sliding hole (27) is provided on the support frame (3); the main body portion (22) and the driving portion (23) are connected via a third guide bolt (26) that slides with the third sliding hole (27); and the driving portion (23) is provided with an arc-shaped abutting end (28) for abutting against the second end portion (13).

7. The hand-cranked propulsion system for a low-voltage cabinet drawer according to claim 6, characterized in that: A guide member (29) is provided on the support frame (3), and a fourth sliding hole (30) that is slidably matched with the guide member (29) is provided on the driving portion (23).

8. The hand-cranked propulsion system for a low-voltage cabinet drawer according to claim 7, characterized in that: The indicating mechanism (2) comprises an indicator gear (31), and a slot (32) is provided on the indicator gear (31); the interlocking block (10) comprises an inserting rod (33) for inserting into the slot (32).

9. The manual propulsion system for the low-voltage cabinet drawer according to claim 8, characterized in that: The first guide bolt (18) and the third guide bolt (26) are connected with a return spring (34).

10. The manual propulsion system for a low-voltage cabinet drawer according to claim 1, characterized in that: The turbine propulsion mechanism (1) is provided with a locking bracket (35), the turbine propulsion mechanism (1) comprises a positioning seat (37) and a turbine (36) matched with the positioning seat (37), the end of the turbine (36) is provided with a locking protrusion (38); the locking bracket (35) is provided with a locking groove (39) matched with the locking protrusion (38).

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