Interlocking mechanism, hand-operated pushing position positioning closing interlocking mechanism and thin drawer assembly

Abstract

The utility model relates to the technical field of low-voltage switch cabinets, in particular to an interlocking mechanism, which comprises a mounting substrate, an interlocking plate fixing support, a first interlocking notch, a second interlocking notch and an interlocking plate, the interlocking plate is installed on the interlocking plate fixing support in a left-right translation mode, and a second interlocking notch is formed in the interlocking plate; the closing interlocking mechanism comprises a closing interlocking fixing support; an arc-shaped traction sliding groove is formed in the closing interlocking traction plate; and the switching-on interlocking locking plate can be installed on the switching-on interlocking fixing support in an up-down translation mode, the switching-on interlocking locking plate is provided with a driving part and a locking part, the driving part is embedded into the arc-shaped traction sliding groove, and the locking part is embedded into the first interlocking notch and the second interlocking notch to lock the interlocking plate. The switch-on interlocking mechanism has the beneficial effects that the switch-on interlocking height of the switch-on interlocking mechanism is reduced, so that the height of the switch-on interlocking center is reduced to 34-37mm, and the application requirement of a 100-modulus thin drawer unit is met.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage switch cabinets, in particular to an interlocking mechanism, a hand-cranked pushing position positioning closing interlocking mechanism and a thin drawer assembly. Background Art

[0002] The module of the drawer unit is generally 150mm. The drawer unit with a module less than 150mm is commonly called a thin drawer unit.

[0003] The three-position push operation of the thin drawer unit of a foreign brand is a hand-pull push mode, with a module of 100mm and a unit depth of 450mm. One device can have up to 18 circuits, and the incoming power is provided by the drawer incoming main circuit plug connection. The 100mm module thin drawer unit is used for MCC motor control circuits below 11kW.

[0004] When domestic low-voltage switchgear is used in motor control circuits below MCC11kW, the drawer unit is a 1 / 2 drawer unit with a module of 200mm and a unit depth of 450mm. The 1 / 2 drawer unit is provided with incoming power by a power distributor. The power distributor occupies the drawer depth, which reduces the drawer depth. Due to the high degree of intelligence of control circuits below 11kW, the internal space of the 1 / 2 drawer unit can no longer meet the needs of component installation.

[0005] The width of the thin drawer unit is greater than that of the 1 / 2 drawer unit, and the depth of the thin drawer unit is greater than that of the 1 / 2 drawer unit, because the 1 / 2 drawer unit needs to be equipped with a power distributor with a depth of 45 to 60 mm. Therefore, when applied to the MCC11kW control circuit, the thin drawer unit has a large space for component layout, is very convenient for installation and maintenance, and has high equipment operation safety.

[0006] When applied to the MCC11kW control circuit, the gap between the contacts of the components arranged in the 1 / 2 drawer unit is very small, and installation and maintenance are very difficult. Therefore, users of the MCC7.5~11kW motor control circuit use 150mm module unit drawers instead of 1 / 2 drawer units. The reason is that there is no application technology for 100mm and 125mm module thin drawer units in China. Only foreign brands and domestic authorized panel manufacturers have thin drawer units and use miniaturized foreign brand components.

[0007] The unit door height of the 100mm module thin drawer unit is 90mm, and the closing interlock center height of the circuit breaker is only between 34 and 37mm. The closing interlock mechanism currently used in China requires a minimum closing interlock center height of 66mm. Utility Model Content

[0008] The technical problem to be solved by the utility model is that the closing interlock center height of the existing closing interlock mechanism is too high and cannot be applied to a thin drawer unit.

[0009] The technical solution adopted by the utility model to solve the technical problem is: an interlocking mechanism, which is an interlocking mechanism of a drawer unit of a low-voltage switch cabinet, comprising:

[0010] An installation base plate, the installation base plate is provided with an interlocking plate fixing bracket protruding from the installation base plate, and the interlocking plate fixing bracket is provided with a first interlocking notch;

[0011] An interlocking plate, the interlocking plate is used to be linked with the position positioning mechanism and the interlocking propulsion mechanism, the interlocking plate can be installed on the interlocking plate fixing bracket in a left-right translational manner, the interlocking plate has a second interlocking notch matched with the first interlocking notch, and when the interlocking plate is in the locked position, the first interlocking notch and the second interlocking notch overlap;

[0012] Closing interlock mechanism, the closing interlock mechanism includes:

[0013] The closing interlock fixing bracket is fixed on the unit bottom plate, or the closing interlock fixing bracket is fixed on the mounting base plate, and the closing interlock fixing bracket is provided with a switch-on and switch-off shaft rod through hole for supporting the switch-on and switch-off shaft rod;

[0014] The closing interlock traction plate has a closing and opening shaft rod operation hole and an arc-shaped traction slide groove;

[0015] The closing interlock locking plate can be installed on the closing interlock fixed bracket so as to move up and down. The closing interlock locking plate is provided with a driving part and a locking part. The driving part is embedded in the arc-shaped traction groove, and is used to make the closing interlock traction plate drive the closing interlock locking plate up and down through the arc-shaped traction groove. When the interlocking plate is in the locked position and the closing interlock locking plate drops to the lowest point, the locking part is embedded in the first interlocking notch and the second interlocking notch to lock the interlocking plate.

[0016] When the closing interlocking mechanism is in the locked state, the pushing mechanism and the position positioning mechanism cannot be unlocked, the drawer unit and the pushing mechanism are locked, and the unlocking button on the panel of the drawer unit cannot be unlocked.

[0017] In some embodiments, optionally, the closing interlock locking plate also has a hole blocking plate extending toward one side of the propulsion mechanism. When the closing interlock locking plate locks the interlocking plate, the hole blocking plate descends together with the closing interlock locking plate to block the operating hole of the propulsion mechanism.

[0018] In some embodiments, optionally, the closing interlock traction plate and the closing interlock locking plate are respectively located at the front and rear sides of the closing interlock fixing bracket.

[0019] In some embodiments, optionally, the specific structure of the closing interlock locking plate that can be installed on the closing interlock fixed bracket so as to be translated up and down is as follows: the closing interlock locking plate and the closing interlock fixed bracket respectively have at least two groups of mutually cooperating bar slide grooves and fixed shafts, the fixed shaft has a limiting end, and the closing interlock locking plate is installed on the closing interlock fixed bracket so as to be translated up and down by the fixed shaft passing through the bar slide groove.

[0020] In some embodiments, optionally, the closing interlock traction plate and the closing interlock locking plate are respectively located on the front and rear sides of the closing interlock fixed bracket, the driving part of the closing interlock locking plate is a driving shaft installed on the closing interlock locking plate, the closing interlock fixed bracket is provided with a give-way groove for the give-way driving shaft, and the end of the driving shaft located on the outside of the closing interlock fixed bracket is provided with a limiting end.

[0021] In some embodiments, optionally, the interlock plate fixing bracket is a front end plate vertically arranged in front of the mounting base plate, and the closing interlock mechanism is located behind the interlock plate.

[0022] In some embodiments, optionally, the first interlocking notch is located on an upper side of the interlocking plate fixing bracket, and the second interlocking notch is located on an upper side of the interlocking plate.

[0023] A hand-cranked push position positioning closing interlock mechanism, specifically a hand-cranked push position positioning closing interlock mechanism of a drawer unit of a low-voltage switch cabinet, comprising:

[0024] A position positioning mechanism, the position positioning mechanism comprises a mounting base plate and a position locking plate, the position locking plate is mounted on the mounting base plate so as to be swingable about an axis, and unlocks and positions the drawer unit through a swinging action;

[0025] Interlocking mechanism, the interlocking mechanism is the above-mentioned interlocking mechanism;

[0026] The propulsion mechanism is a spiral hand-cranked propulsion mechanism, comprising a mounting base plate and a cranking spiral member mounted on the mounting base plate;

[0027] Among them, there is a linkage structure between the position locking plate and the interlocking plate, which converts the swinging action of the position locking plate to unlock and position the drawer unit into the left and right translation action of the interlocking plate, interlocking the propulsion mechanism.

[0028] In some embodiments, optionally, the mounting base plates of the position positioning mechanism, the interlocking mechanism and the propulsion mechanism are the same component.

[0029] A thin drawer assembly comprises a unit chamber and a thin drawer unit in the unit chamber. The thin drawer unit is equipped with the above-mentioned hand-cranked pushing position positioning closing interlocking mechanism, and the module of the thin drawer unit is less than 150mm.

[0030] In some embodiments, optionally, the thin drawer unit is installed in the unit chamber by a guide rail device, the guide rail device includes a guide rail and a slide column, the guide rail and the slide column are respectively arranged on the upper plane of the unit chamber layer plate and the bottom plane of the unit, and the outer side of the guide rail has a unit limiter, the unit limiter includes a limit side plate and an L-shaped upper baffle, the L-shaped upper baffle is located at the upper part of the limit side plate, the L-shaped upper baffle includes a horizontal plate and a vertical plate, the L-shaped upper baffle is fixed to the limit side plate through the horizontal plate, and the vertical plate is located on the inner side of the limit side plate, the lower part of the thin drawer unit has an outer edge protruding outward from the unit side plate, when the thin drawer unit enters the unit chamber and the slide column correctly enters the guide rail, the limit side plate blocks the outer side of the outer edge to limit the thin drawer unit to the left and right, when the thin drawer unit enters the unit chamber and the slide column does not correctly enter the guide rail, the L-shaped upper baffle blocks the front of the outer edge of the unit side plate through the vertical plate, preventing the thin drawer unit from continuing to enter the unit chamber.

[0031] The beneficial effects of the utility model are as follows: the closing interlock height of the closing interlock mechanism is reduced, so that the closing interlock center height is reduced to 34-37 mm, meeting the application requirements of a 100-module thin drawer unit.

[0032] Moreover, the closing interlock height of the closing interlock mechanism can be adjusted according to the height of the applied drawer unit and the current size of the circuit breaker. As long as the opening and closing angles of the circuit breaker remain unchanged, the closing interlock traction plate does not need to be adjusted.

[0033] If the opening and closing angles of the circuit breaker change, it is only necessary to adjust the arc-shaped traction slide of the closing interlock traction plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0035] Figure 1 is a schematic structural diagram of a closing interlock fixing bracket of Example 1;

[0036] Figure 2 is a schematic structural diagram of the closing interlocking mechanism in the open state from a front view of Example 1;

[0037] Figure 3 is a schematic diagram of the structure of the closing interlocking mechanism in the open state from a back view of Example 1;

[0038] Figure 4 is a schematic structural diagram of the closing interlocking mechanism in the closing state of Example 1 from a front view;

[0039] Figure 5 is a schematic diagram of the structure of the closing interlocking mechanism in the closing state of Example 1 from a back view;

[0040] Figure 6is a schematic structural diagram of the closing interlocking mechanism in the re-locking state from a front view of Example 1;

[0041] Figure 7 is a schematic diagram of the structure of the closing interlocking mechanism in the re-locking state from a back view of Example 1;

[0042] Figure 8 is a structural schematic diagram of the hand-cranked propulsion position positioning interlocking mechanism assembly in the locked state of Example 1;

[0043] Fig. 9 is a structural schematic diagram of the hand-cranked propulsion position positioning interlocking mechanism assembly in the unlocked state of Example 1;

[0044] Fig.10 1 is a schematic diagram of the structure of the hand-cranked push position positioning closing interlock mechanism in the locked state when the switch is opened in Example 1;

[0045] Fig.11 1 is a schematic diagram of the structure of the hand-cranked push position positioning closing interlock mechanism in the unlocked state when the switch is opened in Example 1;

[0046] Fig.12 It is a structural schematic diagram of the closing interlocking mechanism for manually pushing the switch in position during closing of Example 1;

[0047] Fig.13 It is a structural schematic diagram of the hand-cranked advancing position positioning closing interlock mechanism when the circuit breaker is tripped in Example 1;

[0048] Fig.14 It is a structural schematic diagram of the hand-cranked advancing position positioning closing interlocking mechanism during re-locking of Example 1;

[0049] Fig.15 is a schematic diagram of the structure of the closing interlocking mechanism of Example 1 cooperating with the second pair of interlocking notches;

[0050] Fig.16 is a schematic diagram of the structure of the closing interlocking mechanism of Example 1 cooperating with the third pair of interlocking notches;

[0051] Fig.17 It is a schematic structural diagram of a 100-module thin drawer assembly with a cabinet width of 600 for an MCC circuit in Example 1;

[0052] Fig.18 It is a schematic structural diagram of a 600 cabinet-width 125-module thin drawer assembly for an MCC loop in Example 1;

[0053] Fig.19 is a schematic structural diagram of the guide rail on the left side of Example 1;

[0054] Fig. 20 is a schematic structural diagram of the guide rail on the right side of Example 1;

[0055] Fig.21 is a schematic diagram showing that the drawer unit is blocked when the left side slide post and the guide rail of Embodiment 1 are not properly aligned;

[0056] Fig. 22 yes Fig.21 A partial enlarged view of

[0057] Fig.23 is a schematic diagram of the drawer unit being unobstructed when the left side slide post of Embodiment 1 is correctly aligned and enters the guide rail;

[0058] Fig.24 2 is a schematic structural diagram of a hand-pull-pull position positioning interlocking mechanism assembly of the hand-pull-pull of Embodiment 2;

[0059] In the figure, 1. mounting base plate, 1-1. interlock plate fixing bracket, 2-1. first interlock notch, 2-2. second interlock notch, 3. interlock plate, 4-1. closing interlock fixing bracket, 4-2. opening and closing shaft rod through hole, 4-3. closing interlock traction plate, 4-4. opening and closing shaft rod operating hole, 4-5. arc traction slide, 4-6. closing interlock locking plate, 4-7. driving part, 4-8. locking part, 4-9. hole blocking plate, 4-10. strip slide, 4-11. fixed shaft, 4-12. Give way slide, 5-1. Position locking plate, 5-2. Lock plate traction head, 6. Unit chamber, 6-1. Unit chamber layer plate, 7. Thin drawer unit, 7-1. Outer edge, 7-2. Unit bottom plate, 8-1. Guide rail, 8-2. Slide column, 8-3. Limit side plate, 8-4. L-shaped upper baffle, 9. Opening and closing shaft rod, 10-1. Swing-in spiral part, 10-2. Operating shaft sleeve, 10-3. Position locking mouth, 10-4. Operating hole, 11. Opening and closing handle, 12. Unlocking button, 13. Circuit breaker. DETAILED DESCRIPTION

[0060] Example 1

[0061] like Figures 1 to 9 As shown, an interlocking mechanism is an interlocking mechanism of a drawer unit of a low-voltage switch cabinet, comprising:

[0062] A mounting base plate 1, the mounting base plate 1 having an interlocking plate fixing bracket 1-1 protruding from the mounting base plate 1, and an upper side of the interlocking plate fixing bracket 1-1 having a first interlocking notch 2-1;

[0063] The interlocking plate 3 is used to be linked with the position positioning mechanism and the interlocking propulsion mechanism. The interlocking plate 3 can be installed on the interlocking plate fixing bracket 1-1 so as to be translatable left and right. The upper side of the interlocking plate 3 has a second interlocking notch 2-2 that matches the first interlocking notch 2-1. When the interlocking plate 3 is in the locked position, the first interlocking notch 2-1 and the second interlocking notch 2-2 overlap.

[0064] like Figures 1 to 7 As shown, the closing interlock mechanism includes:

[0065] The closing interlock fixing bracket 4-1 is fixed on the unit bottom plate 7-2, or the closing interlock fixing bracket 4-1 is fixed on the mounting base plate 1, and the closing interlock fixing bracket 4-1 has a switch-on and switch-off shaft rod through hole 4-2 for supporting the switch-on and switch-off shaft rod 9;

[0066] The closing interlock traction plate 4-3 is provided with a closing and opening shaft rod operation hole 4-4 and an arc-shaped traction slide groove 4-5;

[0067] The closing interlock locking plate 4-6 can be installed on the closing interlock fixed bracket 4-1 so as to be movably moved up and down. The closing interlock locking plate 4-6 has a driving part 4-7 and a locking part 4-8. The driving part 4-7 is embedded in the arc traction groove 4-5, which is used to make the closing interlock traction plate 4-3 drive the closing interlock locking plate 4-6 to move up and down through the arc traction groove 4-5. When the interlocking plate 3 is in the locked position and the closing interlock locking plate 4-6 drops to the lowest point, the locking part 4-8 is embedded in the first interlocking groove 2-1 and the second interlocking groove 2-2 to lock the interlocking plate 3.

[0068] The closing interlock locking plate 4-6 also has a hole blocking plate 4-9 extending toward one side of the propulsion mechanism. When the closing interlock locking plate 4-6 locks the interlock plate 3, the hole blocking plate 4-9 descends together with the closing interlock locking plate 4-6 to block the operating hole 10-4 of the propulsion mechanism.

[0069] Specifically, the specific structure of the closing interlock locking plate 4-6 that can be installed on the closing interlock fixed bracket 4-1 so as to be translated up and down is as follows: the closing interlock locking plate 4-6 and the closing interlock fixed bracket 4-1 respectively have at least two groups of mutually cooperating strip slide grooves 4-10 and fixed shafts 4-11, and the fixed shaft 4-11 has a limiting end. The closing interlock locking plate 4-6 is installed on the closing interlock fixed bracket 4-1 so as to be translated up and down through the fixed shaft 4-11 passing through the strip slide groove 4-10.

[0070] The closing interlock traction plate 4-3 and the closing interlock locking plate 4-6 are respectively located on the front and rear sides of the closing interlock fixed bracket 4-1, and the driving part 4-7 of the closing interlock locking plate 4-6 is a driving shaft installed on the closing interlock locking plate 4-6. The closing interlock fixed bracket 4-1 is provided with a giving way groove 4-12 for giving way to the driving shaft, and the end of the driving shaft located on the outside of the closing interlock fixed bracket 4-1 is provided with a limiting end.

[0071] The interlocking plate fixing bracket 1 - 1 is a front end plate vertically arranged in front of the mounting base plate 1 , and the closing interlocking mechanism is located behind the interlocking plate 3 .

[0072] The specific structure of the interlocking plate 3 that can be installed on the interlocking plate fixing bracket 1-1 so as to be movably moved left and right is as follows: the interlocking plate 3 and the interlocking plate fixing bracket 1-1 respectively have at least two groups of mutually cooperating strip slide grooves 4-10 and fixed shafts 4-11, and the interlocking plate 3 can be installed on the interlocking plate fixing bracket 1-1 so as to be movably moved left and right through the fixed shaft 4-11 passing through the strip slide groove 4-10.

[0073] The side of the closing interlock fixing bracket 4-1 has a right-angled edge bent forward, and the bent edge has a strip slide 4-10, and the number of the strip slide 4-10 is two, and they are arranged up and down. The closing interlock locking plate 4-6 is a Z-shaped right-angled bending structure, including a rear section, a middle bending section and a front section. The closing interlock locking plate 4-6 is located in front of the closing interlock fixing bracket 4-1, and the rear section of the closing interlock locking plate 4-6 leans on the closing interlock locking plate 4-6, and the middle bending section of the closing interlock locking plate 4-6 leans on the right-angled edge of the closing interlock locking plate 4-6. The fixed shaft 4-11 with a limited end is a self-tapping bolt, and the fixed shaft 4-11 passes through the strip slide 4-10 and is screwed on the middle bending section of the closing interlock locking plate 4-6.

[0074] The locking portion 4-8 on the closing interlock locking plate 4-6 is a protruding plate on the middle bending section of the closing interlock locking plate 4-6 that protrudes forward.

[0075] The driving shaft is also a self-tapping bolt, and the driving shaft passes through the arc-shaped traction slide groove 4-5 and the yield slide groove 4-12 in sequence and is screwed on the rear section of the closing interlock locking plate 4-6.

[0076] The front section of the closing interlock locking plate 4-6 is located in front of the right-angled bent edge of the closing interlock fixing bracket 4-1, one end of the blocking plate 4-9 is fixed on the front section of the closing interlock locking plate 4-6, and the other end of the blocking plate 4-9 is used to block the operating hole 10-4 of the propulsion mechanism.

[0077] In this embodiment 1, the closing interlock mechanism cooperates with the matching first interlock notch 2-1 and second interlock notch 2-2 on the mounting base plate 1 and the interlock plate 3 to meet the closing of the circuit breaker 13. Fig.12 As shown, the locking portion 4-8 of the closing interlock locking plate 4-6 enters the first interlocking notch 2-1 and the second interlocking notch 2-2, so that the pushing mechanism and the position positioning mechanism cannot be unlocked, the drawer unit and the pushing mechanism are locked, and the position interlocking operating mechanism of the drawer unit, that is, the unlocking button 12, cannot be unlocked; when the circuit breaker 13 is opened, as shown Fig.10 and 11As shown, the locking portion 4-8 of the closing interlock locking plate 4-6 is disengaged from the first interlocking notch 2-1 and the second interlocking notch 2-2, the position positioning mechanism can perform an unlocking operation, and the pushing mechanism pushes the drawer unit in three positions; Fig.13 As shown, when the circuit breaker 13 is tripped, the locking portion 4-8 of the closing interlock locking plate 4-6 is still in the first interlocking notch 2-1 and the second interlocking notch 2-2. After the circuit breaker 13 is locked again, as shown in FIG. Fig.14 As shown, the locking portion 4-8 is disengaged from the first interlocking notch 2-1 and the second interlocking notch 2-2; when the interlocking plate 3 moves leftward and is in the unlocked state, the first interlocking notch 2-1 and the second interlocking notch 2-2 are in a dislocated state, the locking portion 4-8 is blocked, and the circuit breaker 13 cannot be closed. Fig. 9 and 11 shown.

[0078] At the same time, the insertion length of the closing interlock locking plate 4-6 is shortened, and the closing interlock height is lowered to the effective height.

[0079] In this embodiment 1, there are three pairs of matching first interlocking notches 2-1 and second interlocking notches 2-2 on the mounting base plate 1 and the interlocking plate 3, which are the first pair of interlocking notches, the second pair of interlocking notches and the third pair of interlocking notches from right to left. Fig.10 In the circuit breaker interlocking locking plate 4-6, the first pair of interlocking notches cooperate to perform the circuit breaker interlocking. Fig.15 In the embodiment, the closing interlock locking plate 4-6 cooperates with the second pair of interlocking notches. Fig.16 In the embodiment, the closing interlock locking plate 4-6 cooperates with the third pair of interlocking notches.

[0080] The purpose of setting three pairs of interlocking notches is: in view of the fact that there are 630A and 400A circuit breakers 13 on the market with the same current level but different eccentricities and different external dimensions of the circuit breakers 13. The thin drawer unit 7 using the interlocking mechanism of this embodiment 1 is to be installed and applied in a switch cabinet together with the 630A unit. It is necessary to ensure that the center of the opening and closing handle 11 of the thin drawer unit 7 is consistent with that of the opening and closing handle 11 of the 630A unit. When the center of the opening and closing handle 11 of the matching drawer unit 7 is changed, the interlocking notches corresponding to the closing interlock locking plate 4-6 are also changed accordingly.

[0081] The beneficial effects are:

[0082] 1. The application technical problem of the thin drawer unit 7 with a module of 100 mm and 125 mm is solved: the closing interlock height of the closing interlock mechanism of the present embodiment 1 is reduced, so that the center height of the closing interlock is reduced to 34-37 mm, which meets the application technical requirements of the thin drawer unit 7 with a module of 100.

[0083] Moreover, the closing interlock height of the closing interlock mechanism can be adjusted according to the height of the applied drawer unit 7 and the current of the circuit breaker 13. As long as the opening and closing angles of the circuit breaker 13 remain unchanged, the closing interlock traction plate 4-3 does not need to be adjusted.

[0084] 2. If the opening and closing angle of the circuit breaker 13 changes, it is only necessary to adjust the arc-shaped traction slide 4-5 of the closing interlock traction plate 4-3.

[0085] 3. It can be equipped with various structural types of propulsion mechanisms to eliminate the blocking resistance when the circuit breaker 13 trips abnormally.

[0086] like Figures 8 to 14 As shown, a manual push position positioning closing interlock mechanism, specifically a manual push position positioning closing interlock mechanism of a drawer unit of a low-voltage switch cabinet, comprises:

[0087] The position positioning mechanism comprises a mounting base plate 1 and a position locking plate 5-1, wherein the position locking plate 5-1 is mounted on the mounting base plate 1 so as to be swingable about an axis, and the drawer unit is unlocked and positioned by a swinging action;

[0088] An interlocking mechanism, which is the interlocking mechanism of Embodiment 1;

[0089] The propulsion mechanism is a spiral hand-cranked propulsion mechanism, comprising a mounting base plate 1 and a cranking spiral member 10-1 mounted on the mounting base plate 1;

[0090] Among them, the mounting base plate 1 of the position positioning mechanism, interlocking mechanism and propulsion mechanism is the same component, and there is a linkage structure between the position locking plate 5-1 and the interlocking plate 3, which converts the swinging action of the position locking plate 5-1 to unlock and position the drawer unit into the left and right translation action of the interlocking plate 3, interlocking the propulsion mechanism.

[0091] like Figure 8 and 9 As shown, in this embodiment 1, the position positioning mechanism, the propulsion mechanism and the interlocking plate 3 are in an assembly form, and the closing interlocking mechanism is separately installed on the unit bottom plate 7-2.

[0092] The linkage structure between the position locking plate 5-1 and the interlocking plate 3 is specifically as follows: the position locking plate 5-1 has a protruding lock plate traction head 5-2, and the interlocking plate 3 has a driving slot. The lock plate traction head 5-2 is inserted into the driving slot, so that the interlocking plate 3 is linked with the position positioning mechanism, and the swinging action of the position locking plate 5-1 to unlock and position the drawer unit is converted into a left and right translational action of the interlocking plate 3, interlocking the propulsion mechanism.

[0093] The specific structure of the interlocking propulsion mechanism of the interlocking plate 3 is as follows: the front end of the rocking-in screw 10-1 has an operating sleeve 10-2 for operating the rocking-in screw 10-1, the side of the operating sleeve 10-2 is provided with a position locking port 10-3, the end of the operating sleeve 10-2 has an operating hole 10-4, and the head end of the interlocking plate 3 is inserted into the position locking port 10-3 to lock the propulsion mechanism.

[0094] like Figures 17-18 As shown, a thin drawer assembly includes a unit chamber 6 and a thin drawer unit 7 in the unit chamber 6. The hand-cranked push position positioning closing interlocking mechanism of this embodiment 1 is installed on the thin drawer unit 7, and the module of the thin drawer unit 7 is less than 150mm.

[0095] like Figures 19 to 23 As shown, the thin drawer unit 7 is installed in the unit chamber 6 through a guide rail device, and the guide rail device includes a guide rail 8-1 and a slide column 8-2, and the guide rail 8-1 and the slide column 8-2 are respectively arranged on the upper plane of the unit chamber layer plate 6-1 and the bottom plane of the unit, that is, the bottom plane of the unit bottom plate 7-2. The slide column 8-2 is a T-shaped slide column.

[0096] The outer side of the guide rail 8 - 1 is provided with a unit stopper. The unit limiting member includes a limiting side plate 8-3 and an L-shaped upper baffle plate 8-4, the L-shaped upper baffle plate 8-4 is located at the upper part of the limiting side plate 8-3, the L-shaped upper baffle plate 8-4 includes a horizontal plate and a vertical plate, the L-shaped upper baffle plate 8-4 is fixed on the limiting side plate 8-3 through the horizontal plate, and the vertical plate is located on the inner side of the limiting side plate 8-3, the lower part of the thin drawer unit 7 has an outer edge 7-1 protruding outward from the unit side plate, when the thin drawer unit 7 enters the unit chamber 6 and the slide column 8-2 correctly enters the guide rail 8-1, the limiting side plate 8-3 blocks the outer side of the outer edge 7-1 to limit the thin drawer unit 7 entering the unit chamber 6 to the left and right, when the thin drawer unit 7 enters the unit chamber 6 and the slide column 8-2 does not correctly enter the guide rail 8-1, the L-shaped upper baffle plate 8-4 blocks the front of the outer edge 7-1 of the unit side plate through the vertical plate, preventing the thin drawer unit 7 from continuing to enter the unit chamber 6 unbalancedly.

[0097] The three position operation instructions of the thin drawer unit 7 of this embodiment 1 are as follows:

[0098] The thin drawer unit 7 enters the unit chamber 6 in a parallel state and reaches the separation position, and the position of the thin drawer unit 7 is locked. If the thin drawer unit 7 does not enter the unit chamber 6 in a parallel state, the thin drawer unit 7 will be blocked by the unit stopper on the side of the guide rail 8-1. When the thin drawer unit 7 is in the separation position, the slide column 8-2 is hooked with the guide rail 8-1.

[0099] Press the unlocking button 12 on the left side of the disk of the thin drawer unit 7 to unlock the three-position positioning mechanism and the propulsion mechanism. The hand-cranked propulsion mechanism pushes the thin drawer unit 7 to the test position, the position positioning mechanism is locked, and the propulsion mechanism is interlocked through the interlocking plate 3.

[0100] Press the unlock button 12 again to unlock the three-position positioning mechanism and the pushing mechanism, and the hand-cranked pushing mechanism pushes the thin drawer unit 7 to the connection position.

[0101] The opening and closing handle 11 closes the circuit breaker 13 through the opening and closing shaft 9, and the opening and closing shaft 9 drives the closing interlocking structure to lock the interlocking plate 3, the positioning mechanism is locked, and then the propulsion mechanism is also locked, the unlocking button 12 cannot be operated, and the thin drawer unit 7 cannot be operated.

[0102] like Fig.10 As shown, when the circuit breaker 13 is opened, the closing interlock locking plate 4 - 6 is disengaged from the first interlocking notch 2 - 1 and the second interlocking notch 2 - 2 , and the position positioning mechanism can be unlocked by the unlocking button 12 .

[0103] When the drawer is withdrawn to the separation position, the slide post 8-2 is blocked by the guide rail 8-1 to prevent it from falling. By slightly lifting the thin drawer unit 7, the slide post 8-2 is separated from the guide rail 8-1, and the thin drawer unit 7 can be pulled out.

[0104] The unit door of the thin drawer unit 7 is provided with a hinge, and the unit door can be opened and closed.

[0105] After the pushing mechanism is unlocked, the finger is shaken half a circle before the unlocking button 12 is released, and the hand shake is continued, so that the thin drawer unit 7 is pushed into place in sequence and then automatically locked.

[0106] like Fig.17 As shown, the module of the thin drawer unit 7 is 100mm, the height of the unit chamber is 80mm, the height of the guide rail 8-1 is 7.5mm, and there needs to be a 2.5-5mm gap between the upper part of the thin drawer unit 7 and the bottom surface of the upper unit chamber layer 6-1. The effective height of the thin drawer unit 7 is only 67.5-70mm. The secondary plug-in has 24 points, and the three-phase 63A main circuit connector input and output lines are used in switch cabinets with a cabinet width of 600mm and a unit depth of 450mm. It is used for MCC motor control circuits below 7.5kW. The internal components use motor protectors with 2 auxiliary contacts. The installation height occupies 63mm. The installation height of components such as contactors and thermal relays is less than 60mm.

[0107] like Fig.18As shown, the module of the thin drawer unit 7 of this embodiment 1 can also be designed to be 125mm. The thin drawer unit 7 with a module of 125mm is to realize the RS485 communication interface function of the MCC motor control circuit, and through the main circuit connector 125A current input line, 63A output line, so that the motor control circuit reaches 22kW. Meet the application requirements of domestic components with a maximum unit operating current of 45A.

[0108] The thin drawer units 7 with a module of 100 and 125 mm in this embodiment 1 provide unit structure support for the application of domestic components. When used in combination with the drawer units with a module of 200 mm and 400 mm, the drawer unit circuits of the switch cabinet can be increased from 12 to 14 or 18 units. The application demand for 1 / 2 drawer units in MCC motor control circuits with a current level below 22 kW is greatly reduced, thereby reducing the equipment manufacturing and procurement costs, making user maintenance more convenient, and ensuring safer and more stable equipment operation.

[0109] The unit current of 63A is applied to the motor control circuit below MCC22kW. The functions of the thin drawer unit 7 with a module of 100 and 125mm of the present embodiment 1 are compared with the thin drawer unit 7 of a foreign brand. The beneficial effects are as follows:

[0110] The three-position pushing operation of the thin drawer unit 7 of a foreign brand is a hand-pull pushing mode. When the thin drawer unit 7 is pushed in the three positions, the thin drawer unit 7 is unlocked by operating the unlocking button 12, and the thin drawer unit 7 is pushed by hand. When the circuit breaker 13 is closed, the thin drawer unit 7 is interlocked.

[0111] The three-position pushing operation of the thin drawer unit 7 of this embodiment 1 is hand-cranked pushing, and of course it can also be designed to be hand-pull pushed. After the thin drawer unit 7 enters the position, it has the three-position and pushing mechanism automatic locking function. When the circuit breaker 13 is closed, the closing interlocking mechanism locks the position positioning mechanism, pushing mechanism and thin drawer unit 7 again. Only after the circuit breaker 13 is opened, the position positioning mechanism, pushing mechanism and thin drawer unit 7 can be unlocked. Reliability, advancement and safety are higher than foreign brands.

[0112] Economic value of application:

[0113] The 100mm module thin drawer unit 7 of this embodiment 1 can use domestic components, which will reduce the application of foreign brand thin drawer units 7 and reduce a considerable amount of equipment procurement costs. At the same time, it provides domestic application technology for the 7.5kWMCC motor control circuit of the domestic low-voltage drawer unit switch cabinet, further improving the structural functional technology of the switch cabinet.

[0114] The use of 125mm module thin drawer unit 7 in the 22kW MCC motor control circuit can reduce the use of 150 and 200mm module drawer units, and increase the equipment density of the 63A unit current MCC motor control circuit from 12 circuits to 14 circuits, reducing the amount of equipment used, saving costs and equipment space.

[0115] The structural application technology of the thin drawer unit 7 of this embodiment 1 improves the electrical performance and safety of the MCC motor control circuit below 7.5kW. Although it is also one device with 18 circuits, the cost of using a 1 / 2 drawer unit is higher because the cost of configuring a power distributor for the 1 / 2 drawer unit is high.

[0116] If the thin drawer unit 7 with domestic components is used in the control circuit of MCC motors below 22kW, the dependence on foreign brands can be greatly reduced, and domestic application technology substitution can be achieved, and the comprehensive industry economic benefits will be considerable in the long run.

[0117] The main application scenarios of the low-voltage switchgear using the thin withdrawable unit of this embodiment 1 are for MCC control equipment such as nuclear power 1E level, shipbuilding, sewage treatment, petrochemical, power plants, water plants, industry, water pumps, small motors, etc. It is safer than the 1 / 2 unit and more than 50% cheaper than foreign brands, and has extremely high practical value.

[0118] Example 2

[0119] It is basically the same as Example 1, except that: Fig.24 As shown, the propulsion mechanism on the hand-cranked propulsion position positioning closing interlock mechanism of Example 1 and the groove-shaped positioning piece on the unit room layer plate 6-1 that cooperates with the propulsion mechanism are removed, so that the thin drawer unit 7 can be manually pulled and pushed by positioning it in the closing interlock matching position.

Claims

1. An interlocking mechanism, characterized in that: The interlocking mechanism is an interlocking mechanism of a drawer unit of a low-voltage switch cabinet, comprising: A mounting base plate (1), wherein the mounting base plate (1) has an interlocking plate fixing bracket (1-1) protruding from the mounting base plate (1), and the interlocking plate fixing bracket (1-1) has a first interlocking notch (2-1); An interlocking plate (3), the interlocking plate (3) being used to be linked with the position positioning mechanism and used to interlock the propulsion mechanism, the interlocking plate (3) being installed on the interlocking plate fixing bracket (1-1) so as to be translatable left and right, the interlocking plate (3) being provided with a second interlocking notch (2-2) matched with the first interlocking notch (2-1), and when the interlocking plate (3) is in a locked position, the first interlocking notch (2-1) and the second interlocking notch (2-2) are overlapped; A closing interlocking mechanism, the closing interlocking mechanism comprising: A closing interlock fixing bracket (4-1), wherein the closing interlock fixing bracket (4-1) is fixed on a unit bottom plate (7-2), or the closing interlock fixing bracket (4-1) is fixed on a mounting base plate (1), and the closing interlock fixing bracket (4-1) is provided with a closing and opening shaft rod through hole (4-2) for supporting the closing and opening shaft rod (9); A closing interlock traction plate (4-3), wherein the closing interlock traction plate (4-3) is provided with a closing and opening shaft rod operating hole (4-4) and an arc-shaped traction sliding groove (4-5); A closing interlock locking plate (4-6) is installed on a closing interlock fixing bracket (4-1) in a manner that it can be translated up and down. The closing interlock locking plate (4-6) is provided with a driving portion (4-7) and a locking portion (4-8). The driving portion (4-7) is embedded in an arc-shaped traction chute (4-5) and is used to enable the closing interlock traction plate (4-3) to drive the closing interlock locking plate (4-6) to move up and down through the arc-shaped traction chute (4-5). When the interlocking plate (3) is in a locked position and the closing interlock locking plate (4-6) drops to a low point, the locking portion (4-8) is embedded in a first interlocking notch (2-1) and a second interlocking notch (2-2) to lock the interlocking plate (3).

2. The interlocking mechanism according to claim 1, characterized in that: The closing interlock locking plate (4-6) also has a hole blocking plate (4-9) extending toward one side of the propulsion mechanism; when the closing interlock locking plate (4-6) locks the interlock plate (3), the hole blocking plate (4-9) descends together with the closing interlock locking plate (4-6) to block the operating hole (10-4) of the propulsion mechanism.

3. The interlocking mechanism according to claim 1, characterized in that: The closing interlock traction plate (4-3) and the closing interlock locking plate (4-6) are respectively located at the front and rear sides of the closing interlock fixing bracket (4-1).

4. The interlocking mechanism according to claim 1 or 3, characterized in that: The specific structure of the closing interlock locking plate (4-6) being installed on the closing interlock fixing bracket (4-1) in a manner that it can be translated up and down is as follows: the closing interlock locking plate (4-6) and the closing interlock fixing bracket (4-1) are respectively provided with at least two groups of mutually matching strip-shaped sliding grooves (4-10) and a fixed shaft (4-11), the fixed shaft (4-11) having a limit end, and the closing interlock locking plate (4-6) is installed on the closing interlock fixing bracket (4-1) in a manner that it can be translated up and down via the fixed shaft (4-11) that passes through the strip-shaped sliding groove (4-10).

5. The interlocking mechanism according to claim 1, characterized in that: The closing interlock traction plate (4-3) and the closing interlock locking plate (4-6) are respectively located at the front and rear sides of the closing interlock fixed bracket (4-1); the driving part (4-7) of the closing interlock locking plate (4-6) is a driving shaft installed on the closing interlock locking plate (4-6); the closing interlock fixed bracket (4-1) is provided with a clearance slide groove (4-12) for the clearance driving shaft; and the end of the driving shaft located outside the closing interlock fixed bracket (4-1) is provided with a limiting end.

6. The interlocking mechanism according to claim 1, characterized in that: The interlocking plate fixing bracket (1-1) is a front end plate arranged vertically on the front part of the mounting base plate (1), and the closing interlocking mechanism is located behind the interlocking plate (3).

7. The interlocking mechanism according to claim 1, characterized in that: The first interlocking notch (2-1) is located on the upper side of the interlocking plate fixing bracket (1-1), and the second interlocking notch (2-2) is located on the upper side of the interlocking plate (3).

8. A hand-cranked position positioning closing interlock mechanism, characterized in that: Specifically, it is a hand-cranked push position positioning closing interlocking mechanism of the drawer unit of the low-voltage switch cabinet, including: A position positioning mechanism, comprising a mounting base plate (1) and a position locking plate (5-1), wherein the position locking plate (5-1) is mounted on the mounting base plate (1) so as to be swingable about an axis, and the drawer unit is unlocked and positioned through a swinging action; An interlocking mechanism, wherein the interlocking mechanism is the interlocking mechanism according to claim 1; A propulsion mechanism, the propulsion mechanism being a screw-type hand-cranked propulsion mechanism, comprising a mounting base plate (1) and a cranking screw member (10-1) mounted on the mounting base plate (1); A linkage structure is provided between the position locking plate (5-1) and the interlocking plate (3), which converts the swinging action of the position locking plate (5-1) to unlock and position the drawer unit into the left-right translation action of the interlocking plate (3), thereby interlocking the propulsion mechanism.

9. The hand-cranked position positioning closing interlocking mechanism according to claim 8 is characterized in that: The mounting base plate (1) of the position positioning mechanism, the interlocking mechanism and the propulsion mechanism is the same component.

10. A thin drawer assembly, characterized by: It comprises a unit chamber (6) and a thin drawer unit (7) in the unit chamber (6), wherein the hand-cranked position positioning closing interlocking mechanism as claimed in claim 8 is installed on the thin drawer unit (7), and the module of the thin drawer unit (7) is less than 150 mm.

11. The thin drawer assembly according to claim 10, characterized in that: The thin drawer unit (7) is installed in the unit chamber (6) through a guide rail device, the guide rail device comprising a guide rail (8-1) and a slide column (8-2), the guide rail (8-1) and the slide column (8-2) are respectively arranged on the upper plane of the unit chamber layer plate (6-1) and the bottom plane of the unit, the outer side of the guide rail (8-1) is provided with a unit limiter, the unit limiter comprises a limiter side plate (8-3) and an L-shaped upper baffle plate (8-4), the L-shaped upper baffle plate (8-4) is located at the upper part of the limiter side plate (8-3), the L-shaped upper baffle plate (8-4) comprises a horizontal plate and a vertical plate, the L-shaped upper baffle plate (8-4) is fixed on the limiter side plate (8-3) through the horizontal plate, and the vertical plate is located On the inner side of the limiting side plate (8-3), the lower part of the thin drawer unit (7) has an outer edge (7-1) protruding outward from the unit side plate. When the thin drawer unit (7) enters the unit chamber (6) and the slide column (8-2) correctly enters the guide rail (8-1), the limiting side plate (8-3) blocks the outer side of the outer edge (7-1) to limit the thin drawer unit (7) to the left and right. When the thin drawer unit (7) enters the unit chamber (6) and the slide column (8-2) does not correctly enter the guide rail (8-1), the L-shaped upper baffle plate (8-4) blocks the front of the outer edge (7-1) of the unit side plate through the vertical plate to prevent the thin drawer unit (7) from continuing to enter the unit chamber (6).

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